### What problem does this PR solve?
feat: node cannot connect to itself #918
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
feat: add duckduckgo icon #918
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
feat: save the parameters of the generate operator to the form field of
the node #918
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
feat: click on a blank area of the canvas to hide the form drawer #918
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
feat: add description text to operators #918
feat: drag the operator to the canvas and initialize the form data #918
feat: extract the useFetchModelId to logicHooks.ts
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
feat: add graph tab to header #918
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
feat: call the reset api before opening the run drawer each time #918
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
feat: modify the style of the operator #918
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
feat: clear the selection box to delete the corresponding edge. #918
feat: fix the problem of form entries being deleted when adding a new
line #918
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
feat: restrict classification operators cannot be connected to Answer
and other classification #918
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
feat: add CategorizeHandle #918
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
feat: add DynamicCategorize #918
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
feat: add delete menu to graph node #918
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
feat: add icon to graph nodes #918
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
