feat(excetions): add base exceptions

[Datata1]

#23

[github-actions]

🛡️ Bandit Security Scan Results

✅ No security issues found by Bandit.

[github-actions]

Pytest Coverage Report

File	Stmts	Miss	Cover	Missing
src/codesphere
client.py	22	0	100%
config.py	9	0	100%
exceptions.py	94	38	59%	25–26, 30, 40–42, 55, 72–75, 85–87, 101–104, 106–107, 148–151, 158–160, 197–199, 205, 207, 211, 214, 216, 218–219, 222
http_client.py	54	6	88%	78–79, 81–82, 87–88
utils.py	27	16	40%	12–13, 26–32, 34–35, 40–43, 45
src/codesphere/core
base.py	19	0	100%
handler.py	91	13	85%	118–120, 125–130, 136–137, 140–141
operations.py	11	0	100%
src/codesphere/resources/metadata
operations.py	6	0	100%
resources.py	20	0	100%
schemas.py	28	0	100%
src/codesphere/resources/team
operations.py	6	0	100%
resources.py	17	0	100%
schemas.py	26	0	100%
src/codesphere/resources/team/domain
manager.py	30	0	100%
operations.py	10	0	100%
resources.py	31	4	87%	45, 48–50
schemas.py	35	0	100%
src/codesphere/resources/workspace
operations.py	11	0	100%
resources.py	23	2	91%	24, 32
schemas.py	76	0	100%
src/codesphere/resources/workspace/envVars
models.py	32	2	93%	39–40
operations.py	6	0	100%
schemas.py	4	0	100%
src/codesphere/resources/workspace/landscape
models.py	0	0	100%
resources.py	0	0	100%
src/codesphere/resources/workspace/pipeline
models.py	0	0	100%
resources.py	0	0	100%
TOTAL	688	81	88%

Test Execution Summary

Tests	Skipped	Failures	Errors	Time
112	0 💤	0 ❌	0 🔥	1.513s ⏱️

[github-actions]

Integration Test Results

28 tests   28 ✅  56s ⏱️
 1 suites   0 💤
 1 files     0 ❌

Results for commit 3a3e7a8.