style: Update enum values to uppercase snake_case and format code

[chyroc]

• Changed all enum values from lowercase to uppercase snake_case to comply with Python conventions
• Modified ruff configuration for code formatting

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 79.78723% with 19 lines in your changes missing coverage. Please review.

Project coverage is 75.22%. Comparing base (a4d0a06) to head (fbcf306). Report is 23 commits behind head on main.

Files with missing lines	Patch %	Lines
cozepy/workflows/runs/__init__.py	40.00%	9 Missing :warning:
cozepy/coze.py	0.00%	7 Missing :warning:
tests/test_conversation_message.py	33.33%	2 Missing :warning:
cozepy/model.py	75.00%	1 Missing :warning:

@@            Coverage Diff             @@
##             main      #25      +/-   ##
==========================================
+ Coverage   75.14%   75.22%   +0.08%     
==========================================
  Files          25       25              
  Lines         873      872       -1     
==========================================
  Hits          656      656              
+ Misses        217      216       -1     

Flag	Coverage Δ
	75.22% <79.78%> (+0.08%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
cozepy/__init__.py	100.00% <100.00%> (ø)
cozepy/auth/__init__.py	98.91% <100.00%> (ø)
cozepy/bots/__init__.py	85.71% <100.00%> (ø)
cozepy/chat/__init__.py	88.11% <100.00%> (ø)
cozepy/config.py	100.00% <100.00%> (ø)
cozepy/conversations/__init__.py	51.72% <100.00%> (ø)
cozepy/request.py	80.00% <100.00%> (ø)
cozepy/workspaces/__init__.py	78.12% <100.00%> (ø)
tests/config.py	83.33% <100.00%> (ø)
tests/test_chat.py	100.00% <100.00%> (ø)
... and 4 more