fix: Fix chat api conversation parameter and Release v0.6.2

[chyroc]

• Fixed issues with conversation parameter passing in chat.create and chat.stream
• Added a translation example to demonstrate how to use conversation
• Updated version to v0.6.2

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 98.04%. Comparing base (58baf9d) to head (7b6182a). Report is 1 commits behind head on main.

@@           Coverage Diff           @@
##             main      #95   +/-   ##
=======================================
  Coverage   98.04%   98.04%           
=======================================
  Files          38       38           
  Lines        2865     2866    +1     
=======================================
+ Hits         2809     2810    +1     
  Misses         56       56           

Files with missing lines	Coverage Δ
cozepy/chat/__init__.py	96.07% <100.00%> (+0.01%)	:arrow_up:
cozepy/version.py	86.36% <100.00%> (ø)