feat: add description text to operators and extract the useFetchModelId to logicHooks.ts and drag the operator to the canvas and initialize the form data #918 (#1379)

### 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)

web/src/components/message-item/index.less

@@ -4,10 +4,10 @@
     display: inline-block;
   }
   .messageItemSectionLeft {
-    width: 70%;
+    width: 80%;
   }
   .messageItemSectionRight {
-    width: 40%;
+    width: 80%;
   }
   .messageItemContent {
     display: inline-flex;