fix: flushing cout where necessary

[benthevining]

Sometimes GCC builds in CI appear to hang after the initial uci command from the GUI, which seems to indicate that the engine's response isn't recieved/processed by the GUI.

[github-actions]

	Tests	Passed ✅	Skipped	Failed	Time ⏱
JUnit Test Report	204 ran	204 ✅	0 ⚠️	0 ❌	5m 21s 786ms

Test	Result	Time ⏱
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	Tests	Passed ✅	Skipped	Failed	Time ⏱
JUnit Test Report	204 ran	204 ✅	0 ⚠️	0 ❌	15m 744ms

Test	Result	Time ⏱
No test annotations available

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	Tests	Passed ✅	Skipped	Failed	Time ⏱
JUnit Test Report	204 ran	204 ✅	0 ⚠️	0 ❌	16m 26s 40ms

Test	Result	Time ⏱
No test annotations available

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	Tests	Passed ☑️	Skipped	Failed ❌️	Time ⏱
JUnit Test Report	203 ran	200 ✅	0 ⚠️	3 ❌	3h 1m 1s 556ms

Test	Result	Time ⏱
JUnit Test Report
9.ben_bot.position_solver.BratkoKopec.9	❌ failure	25m 30ms
10.ben_bot.position_solver.BratkoKopec.10	❌ failure	25m 10ms
2.ben_bot.position_solver.Kaufman.2	❌ failure	25m 20ms

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[github-actions]

	Tests	Passed ☑️	Skipped	Failed ❌️	Time ⏱
JUnit Test Report	204 ran	199 ✅	0 ⚠️	5 ❌	2h 18m 14s 795ms

Test	Result	Time ⏱
JUnit Test Report
1.ben_bot.position_solver.BratkoKopec.1	❌ failure	25m 20ms
4.ben_bot.position_solver.BratkoKopec.4	❌ failure	25m 120ms
10.ben_bot.position_solver.BratkoKopec.10	❌ failure	25m 110ms
1.ben_bot.position_solver.CCROneHour.1	❌ failure	25m 110ms
0.ben_bot.position_solver.LCT.0	❌ failure	25m 60ms

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[github-actions]

	Tests	Passed ☑️	Skipped	Failed ❌️	Time ⏱
JUnit Test Report	203 ran	199 ✅	0 ⚠️	4 ❌	3h 5m 10s 826ms

Test	Result	Time ⏱
JUnit Test Report
9.ben_bot.position_solver.BratkoKopec.9	❌ failure	25m 60ms
10.ben_bot.position_solver.BratkoKopec.10	❌ failure	25m 40ms
1.ben_bot.position_solver.CCROneHour.1	❌ failure	25m 50ms
2.ben_bot.position_solver.Kaufman.2	❌ failure	25m 50ms

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[github-actions]

	Tests	Passed ☑️	Skipped	Failed ❌️	Time ⏱
JUnit Test Report	203 ran	199 ✅	0 ⚠️	4 ❌	4h 7m 55s 191ms

Test	Result	Time ⏱
JUnit Test Report
9.ben_bot.position_solver.BratkoKopec.9	❌ failure	25m 50ms
10.ben_bot.position_solver.BratkoKopec.10	❌ failure	25m 110ms
1.ben_bot.position_solver.CCROneHour.1	❌ failure	25m 50ms
2.ben_bot.position_solver.Kaufman.2	❌ failure	25m 60ms

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[github-actions]

	Tests	Passed ☑️	Skipped	Failed ❌️	Time ⏱
JUnit Test Report	203 ran	196 ✅	0 ⚠️	7 ❌	5h 30m 53s 673ms

Test	Result	Time ⏱
JUnit Test Report
complex_crowded.ben_bot.perft.complex_crowded	❌ failure	25m 20ms
3.ben_bot.position_solver.BratkoKopec.3	❌ failure	25m 30ms
9.ben_bot.position_solver.BratkoKopec.9	❌ failure	25m 20ms
10.ben_bot.position_solver.BratkoKopec.10	❌ failure	25m 20ms
1.ben_bot.position_solver.CCROneHour.1	❌ failure	25m 20ms
0.ben_bot.position_solver.Kaufman.0	❌ failure	25m 30ms
2.ben_bot.position_solver.Kaufman.2	❌ failure	25m 10ms

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[github-actions]

	Tests	Passed ☑️	Skipped	Failed ❌️	Time ⏱
JUnit Test Report	203 ran	198 ✅	0 ⚠️	5 ❌	5h 32m 14s 984ms

Test	Result	Time ⏱
JUnit Test Report
3.ben_bot.position_solver.BratkoKopec.3	❌ failure	25m 120ms
9.ben_bot.position_solver.BratkoKopec.9	❌ failure	25m 50ms
10.ben_bot.position_solver.BratkoKopec.10	❌ failure	25m 100ms
1.ben_bot.position_solver.CCROneHour.1	❌ failure	25m 20ms
2.ben_bot.position_solver.Kaufman.2	❌ failure	25m 110ms

• View JUnit Test Report

[github-actions]

	Tests	Passed ✅	Skipped	Failed	Time ⏱
JUnit Test Report	204 ran	204 ✅	0 ⚠️	0 ❌	14m 58s 570ms

Test	Result	Time ⏱
No test annotations available

• View JUnit Test Report

[github-actions]

	Tests	Passed ✅	Skipped	Failed	Time ⏱
JUnit Test Report	204 ran	204 ✅	0 ⚠️	0 ❌	5m 58s 281ms

Test	Result	Time ⏱
No test annotations available

• View JUnit Test Report

[github-actions]

	Tests	Passed ✅	Skipped	Failed	Time ⏱
JUnit Test Report	204 ran	204 ✅	0 ⚠️	0 ❌	13m 8s 967ms

Test	Result	Time ⏱
No test annotations available

• View JUnit Test Report

[github-actions]

	Tests	Passed ✅	Skipped	Failed	Time ⏱
JUnit Test Report	204 ran	204 ✅	0 ⚠️	0 ❌	5m 10s 477ms

Test	Result	Time ⏱
No test annotations available

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[github-actions]

	Tests	Passed ✅	Skipped	Failed	Time ⏱
JUnit Test Report	204 ran	204 ✅	0 ⚠️	0 ❌	14m 35s 764ms

Test	Result	Time ⏱
No test annotations available

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[github-actions]

	Tests	Passed ✅	Skipped	Failed	Time ⏱
JUnit Test Report	204 ran	204 ✅	0 ⚠️	0 ❌	14m 6s 217ms

Test	Result	Time ⏱
No test annotations available

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[github-actions]

	Tests	Passed ☑️	Skipped	Failed ❌️	Time ⏱
JUnit Test Report	204 ran	203 ✅	0 ⚠️	1 ❌	39m 42s 322ms

Test	Result	Time ⏱
JUnit Test Report
4.ben_bot.position_solver.endgames.4	❌ failure	25m 110ms

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[github-actions]

	Tests	Passed ☑️	Skipped	Failed ❌️	Time ⏱
JUnit Test Report	203 ran	200 ✅	0 ⚠️	3 ❌	3h 4m 47s 653ms

Test	Result	Time ⏱
JUnit Test Report
9.ben_bot.position_solver.BratkoKopec.9	❌ failure	25m 30ms
10.ben_bot.position_solver.BratkoKopec.10	❌ failure	25m 10ms
2.ben_bot.position_solver.Kaufman.2	❌ failure	25m 30ms

• View JUnit Test Report

[github-actions]

	Tests	Passed ☑️	Skipped	Failed ❌️	Time ⏱
JUnit Test Report	203 ran	199 ✅	0 ⚠️	4 ❌	3h 6m 57s 745ms

Test	Result	Time ⏱
JUnit Test Report
9.ben_bot.position_solver.BratkoKopec.9	❌ failure	25m 80ms
10.ben_bot.position_solver.BratkoKopec.10	❌ failure	25m 60ms
1.ben_bot.position_solver.CCROneHour.1	❌ failure	25m 80ms
2.ben_bot.position_solver.Kaufman.2	❌ failure	25m 90ms

• View JUnit Test Report

[github-actions]

	Tests	Passed ☑️	Skipped	Failed ❌️	Time ⏱
JUnit Test Report	203 ran	199 ✅	0 ⚠️	4 ❌	4h 5m 51s 380ms

Test	Result	Time ⏱
JUnit Test Report
9.ben_bot.position_solver.BratkoKopec.9	❌ failure	25m 100ms
10.ben_bot.position_solver.BratkoKopec.10	❌ failure	25m 80ms
1.ben_bot.position_solver.CCROneHour.1	❌ failure	25m 10ms
2.ben_bot.position_solver.Kaufman.2	❌ failure	25m 100ms

• View JUnit Test Report