Features/digital safe firmware (#2)

* Added digital safe firmware

* Adjusted build pipelines

---------

Co-authored-by: Andriy Malyshenko <andriy@malyshenko.com>

firmware/t1616-password-entry/.vscode/extensions.json

@@ -0,0 +1,10 @@
+{
+    // See http://go.microsoft.com/fwlink/?LinkId=827846
+    // for the documentation about the extensions.json format
+    "recommendations": [
+        "platformio.platformio-ide"
+    ],
+    "unwantedRecommendations": [
+        "ms-vscode.cpptools-extension-pack"
+    ]
+}