vscode: initial development configuration (#1520)

* vscode: initial development configuration; fbt: `vscode_dist` target for deploying vscode config
* vscode: fixed fbt blackmagic command

Co-authored-by: あく <alleteam@gmail.com>

.vscode/extensions.json

@@ -0,0 +1,15 @@
+{
+	// See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.
+	// Extension identifier format: ${publisher}.${name}. Example: vscode.csharp
+	// List of extensions which should be recommended for users of this workspace.
+	"recommendations": [
+		"ms-python.black-formatter",
+		"ms-vscode.cpptools",
+		"amiralizadeh9480.cpp-helper",
+		"marus25.cortex-debug",
+		"zxh404.vscode-proto3",
+		"augustocdias.tasks-shell-input"
+	],
+	// List of extensions recommended by VS Code that should not be recommended for users of this workspace.
+	"unwantedRecommendations": []
+}