initial implementation

- Single "inside" light, with inside brightness button. Cycles through the brightness settings, white light only.

.vscode/settings.json

@@ -0,0 +1,8 @@
+{
+    "go.toolsEnvVars": {
+        "GOOS": "linux",
+        "GOARCH": "arm",
+        "GOROOT": "/home/drew/.cache/tinygo/goroot-9c236da82c2ce16303d51dc7635261f33d2c6bc8180628c7b6806ae789ca6c8b",
+        "GOFLAGS": "-tags=cortexm,baremetal,linux,arm,rp2040,rp,pico,tinygo,purego,math_big_pure_go,gc.conservative,scheduler.tasks,serial.usb"
+    }
+}