Update installation script to support specific version installation, list available versions, and improve documentation.
- Add support for installing specific versions with -v/--version flag
- Add -l/--list flag to list all available versions
- Improve help message with examples
- Update README.md to reflect new installation options and examples
- Add note on version compatibility between OBITools2 and OBITools4
- Remove ecoprimers directory
- Improve error handling and user feedback during installation
- Add version detection and download logic from GitHub releases
- Update installation process to use tagged releases instead of master branch
