[Extension] Add *.pdmodel/*.mnn/*.param/*.nb support

Author: DefTruth

README.md

@@ -1,23 +1,23 @@
 # netron-vscode-extension
 
-A vscode extension for netron, support *.pdmodel, *.nb, *.onnx, *.pb, *.h5, *.tflite, *.pth, *.pt, *.mnn, *.tnnproto, *.param, etc. This code is based on [NetronInVSCode](https://github.com/chingweihsu0809/NetronInVSCode) but add more model format support, such as *.pdmodel, *.nb, *.mnn, *.param, *.tnnproto, etc.
+A vscode extension for netron, support *.pdmodel, *.nb, *.onnx, *.pb, *.h5, *.tflite, *.pth, *.pt, *.mnn, *.tnnproto, *.param, etc. This code is based on [NetronInVSCode](https://github.com/chingweihsu0809/NetronInVSCode) but adds more model format support, such as *.pdmodel, *.nb, *.mnn, *.param, *.tnnproto, etc.  
+
+NOTE: This extension is mainly for personal use, and I have no intensive development plans in the future.
+
 
 ## TODO 
 - [x] add *.pdmodel, *.nb, *.mnn, *.param, *.tnnproto format support
+- [x] remove manually `pip install` requirements
 - [ ] onnx-simplifier support
 - [ ] paddle2onnx converter support
 - [ ] x2paddle converter support
 - [ ] MNN converter support
-- [ ] Optimize some UI 
-
-## Requirements
-
-- `pip install netron`
+- [ ] Optimize some UI components
 
 ## Usage
 
 - Install `netron-vscode-extension` from VSCode marketplace.
-- Click on a saved model to see the following.
+- Click on a saved model to see the following.  
 ![alt text](documentation/example.gif)
 
 ## Running the code

src/modelVisualizer.ts

@@ -213,14 +213,27 @@ export class ModelVisualizer implements vscode.CustomEditorProvider<ModelFile> {
 	) { 
 		ModelVisualizer.python.ex`
 		import sys
-		import netron
 		import platform
+		def install_deps():
+		  try:
+			  from pip._internal.cli.main import main
+			  main(['install', 'netron'])
+			  return '0'
+		  except:
+			  return '-1'
+
 		def vis_model(path):
+			import netron
 			if platform.system() == 'Windows':
 				path = path.lstrip('/')
 			addr, port = netron.start(path, browse=False)
 			return 'http://' + str(addr) + ':' + str(port)
 	`;
+  // install deps while extension init
+	ModelVisualizer.python`install_deps()`
+	.then((res) => { console.log(res); })
+	.catch((err) => { console.log(err); });
+	
 	}
 
 	//#region CustomEditorProvider