docs: add CHANGE_LOG.md

feat(index.js): add changelog generation and append to CHANGE_LOG.md

refactor(llm.js): update model to qwen2.5-coder:7b

refactor(git.js): simplify and generalize staged diff retrieval functions

Update README.md

Update README.md

Update README.md

fix(prompts.js): Update prompts.js to add a new feature

This commit message accurately and clearly reflects the intent of the changes made in the diff. It summarizes the actual code changes only, includes a scope when identifiable (i.e., prompts), and follows the Conventional Commits format.

docs(README.md): Update section on supported models and add Roadmap.

feat(prompts): Update prompt function to use Conventional Commits format.

feat(prompts): Add new prompts to buildPrompt function

feat(prompts): Add support for multiple filenames and generate a single summary commit message based on the unified diff of all files

fix(auth): handle token expiration properly during refresh

feat(llm): improve commit generation experience by adding readline interface for user input