Add SAM2 tree detection functionality - Added TreeDetector class and …

[gstazure]

…Detect Trees button with zero-shot detection and fine-tuning capabilities

[Fanchengyan]

Hi @gstazure,

Thank you very much for your contribution!

When I tested it on my own computer, the plugin reported an error immediately upon clicking the "Geo-SAM Segmentation" button. The error message is as follows:

AttributeError: 'QgsDockWidget' object has no attribute 'vl_group_tools'  
Traceback (most recent call last):  
  File "/Users/fancy/Library/Application Support/QGIS/QGIS3/profiles/default/python/plugins/Geo-SAM/geo_sam_tool.py", line 88, in create_widget_selector  
    self.wdg_select.open_widget()  
  File "/Users/fancy/Library/Application Support/QGIS/QGIS3/profiles/default/python/plugins/Geo-SAM/tools/widgetTool.py", line 216, in open_widget  
    self.wdg_sel.vl_group_tools.addWidget(self.pushButton_detect_trees)  
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^  
AttributeError: 'QgsDockWidget' object has no attribute 'vl_group_tools'

Currently, vl_group_tools has not been defined. I suspect this might be because you forgot to include the modified part of Selector.ui.