Geo-SAM-dev

Note: This version is a pre-release of the dev version, and the new features have not been sufficiently tested. You are welcome to help us try it.

Changes compared to v1.2.0-dev:

1. Add a Colab Example geosam-image-encoder.ipynb for the GeoSAM-Image-Encoder Python package to encode images without needing QGIS.
2. Renamed Hover mode to Preview mode
3. Change Minimum Area to Minimum pixels
4. Fix bugs when saving SAM result with Preview mode in v1.2.0-dev
5. add comparison for the result from pressed prompts and preview mode prompts
6. Cursor color now changes when prompt colors are changed