Fix act not found when installed as github cli extension

Signed-off-by: Sanjula Ganepola <sanjulagane@gmail.com>

package.json

@@ -685,6 +685,11 @@
     "configuration": {
       "title": "GitHub Local Actions",
       "properties": {
+        "githubLocalActions.actCommand": {
+          "markdownDescription": "The base `nektos/act` command to be called. By default, this will be `act` (requires the binary to be on your `PATH`). If the binary is not on your `PATH`, the command can be fully qualified. If `act` is installed as a GitHub CLI extension, this command should be set to `gh act`.",
+          "type": "string",
+          "default": "act"
+        },
         "githubLocalActions.dockerDesktopPath": {
           "type": "string",
           "markdownDescription": "The path to your Docker Desktop executable (used for Windows and MacOS). To start Docker Engine from the `Components` view, this application will be launched. Refer to the default path based on OS:\n\n* **Windows**: `C:/Program Files/Docker/Docker/Docker Desktop.exe`\n\n* **MacOS**: `/Applications/Docker.app`",