feat(declib): initial mastodon bot experiment

No default.nix yet, just for development.

Change-Id: Ib8bd0057d697fecd083d5961e635c770b7638e08
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10803
Reviewed-by: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI

users/Profpatsch/.vscode/launch.json

@@ -0,0 +1,18 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "run declib",
+            "type": "node",
+            "cwd": "${workspaceFolder}/declib",
+            "request": "launch",
+            "runtimeExecutable": "ninja",
+            "runtimeArgs": [
+                "run",
+            ],
+        }
+    ]
+}