feat: Add bun.lock to gitignore and improve API key retrieval

This commit adds `bun.lock` to the `.gitignore` file to prevent it from being committed. It also enhances the `getApiKey` function to prioritize checking the `GEMINI_API_KEY` environment variable before falling back to the `.env` file. The version in `package.json` has been updated to 1.0.11.

fix: Increment patch version to 1.0.12

docs: Actualiza la tabla de settings en README con `commitLanguage`

chore: Bump version to 1.0.4

chore: Bump version to 1.0.1

feat: Release version 1.0.0

This commit marks the release of version 1.0.0. It signifies a stable and feature-rich version of GemCommit, ready for wider use. Includes version bump from 0.0.6 to 1.0.0.