VSCode IDE enhancement and readme update (#3172)

- Temporarily disable the deque test for the VS Code extension, as the
  Rust formatter seems to malfunction after a recent VS Code update.
- Add configuration for iwasm host managed heap size, allowing users
  to flexibly `malloc` memory. This also fixes the current bug that when
  default size is 0, it can't run and debug.
- Apply coding style formatting for WAMR IDE source code and add a
  format check for it in CI.
- Update document and some screenshots.

test-tools/wamr-ide/VSCode-Extension/resource/webview/js/configbuildtarget.js

@@ -15,6 +15,7 @@ function submitFunc() {
     let maxMemSize = document.getElementById('max_mem_size').value;
     let stackSize = document.getElementById('stack_size').value;
     let exportedSymbols = document.getElementById('exported_symbols').value;
+    let hostManagedHeapSize = document.getElementById('host_managed_heap_size').value;
 
     vscode.postMessage({
         command: 'config_build_target',
@@ -23,5 +24,6 @@ function submitFunc() {
         maxMemSize: maxMemSize,
         stackSize: stackSize,
         exportedSymbols: exportedSymbols,
+        hostManagedHeapSize: hostManagedHeapSize,
     });
 }