chore: initialize IntelliJ IDEA project configuration

This commit adds the necessary `.idea` configuration files to set up the project in IntelliJ IDEA, including:
- Module definitions and project root mappings.
- Version control system (Git) integration.
- Device streaming cache for Android Studio/IntelliJ device selection.
- Project-level metadata and basic `.gitignore` for the `.idea` directory.

Author: Lanthanum89