Added more documentation

[what-the-diff[bot]]

PR Summary

• Version upgrade The version of our project has been upgraded from 0.7.0 to 0.7.1. This indicates that some improvements have been made.

• Dependency update In README.md, we updated our project's dependency on gouqi. Instead of requiring a specific version ("0.6"), the project can now work with any available version.

• Documentation improvements The explanation and usage examples for various elements in our code (Gouqi, Result, Credentials, Jira, Issues, VersionCreationBody, Versions) have been improved. This will make it easier for other developers to understand and use these parts of the codebase.

• Code enhancement Some minor improvements and optimizations have been made throughout the coding process to make our project more efficient.

[codecov[bot]]

Codecov Report

Merging #42 (10a9009) into main (39ea88b) will decrease coverage by 0.70%. The diff coverage is n/a.

@@            Coverage Diff             @@
##             main      #42      +/-   ##
==========================================
- Coverage   15.04%   14.34%   -0.70%     
==========================================
  Files          19       19              
  Lines        3031     2962      -69     
==========================================
- Hits          456      425      -31     
+ Misses       2575     2537      -38     

Impacted Files	Coverage Δ
src/lib.rs	11.39% <ø> (-0.72%)	:arrow_down:
src/versions.rs	12.50% <ø> (-12.50%)	:arrow_down: