Refactor GameViewResolutionAttribute using IOuterUnityTestAction

[nowsprinting]

Before:
Implements IApplyToContext interface

After:
Implements IOuterUnityTestAction interface

Benefits:

• Not require awaiting before test code
• Support sync test

[github-actions]

Code Metrics Report

	master (b980305)	#25 (f0691a2)	+/-
Coverage	53.8%	55.5%	+1.7%
Code to Test Ratio	1:0.9	1:0.9	+0.0
Test Execution Time	4m37s	4m37s	0s

Details

  |                     | master (b980305) | #25 (f0691a2) |  +/-  |
  |---------------------|------------------|---------------|-------|
+ | Coverage            |            53.8% |         55.5% | +1.7% |
  |   Files             |               17 |            17 |     0 |
  |   Lines             |              448 |           452 |    +4 |
+ |   Covered           |              241 |           251 |   +10 |
+ | Code to Test Ratio  |            1:0.9 |         1:0.9 |  +0.0 |
  |   Code              |              806 |           812 |    +6 |
+ |   Test              |              702 |           709 |    +7 |
  | Test Execution Time |            4m37s |         4m37s |    0s |

Code coverage of files in pull request scope (15.2% → 34.0%)

Files	Coverage	+/-
Runtime/Attributes/GameViewResolutionAttribute.cs	34.0%	+18.8%

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Reported by octocov