add github actions

Signed-off-by: Peter Siegmund <developer@mars3142.org>

.vscode/settings.json

@@ -3,5 +3,17 @@
     "stdint.h": "c",
     "gb.h": "c",
     "version.h": "c"
+  },
+  "actionButtons": {
+    "commands": [
+      {
+        "name": "Clean",
+        "command": "make clean",
+      },
+      {
+        "name": "Build",
+        "command": "make",
+      }
+    ]
   }
 }