Implement WAMR-IDE with vscode extension (#943)

Implement WAMR-IDE with vscode extension to enable developing
WebAssembly applications with coding, building, running and
debugging support. Support both Linux and Windows, and only
support putting all the tools in a docker image, e.g. wasi-sdk, wamrc,
iwasm and so on.

Co-authored-by: Wang Ning <justdoitwn@163.com>

test-tools/wamr-ide/VSCode-Extension/.vscode/tasks.json

@@ -0,0 +1,20 @@
+// See https://go.microsoft.com/fwlink/?LinkId=733558
+// for the documentation about the tasks.json format
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "type": "npm",
+            "script": "watch",
+            "problemMatcher": "$tsc-watch",
+            "isBackground": true,
+            "presentation": {
+                "reveal": "never"
+            },
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            }
+        }
+    ]
+}