chore: add the Apache 2.0 licence

This repository has been public without one, which grants nobody any rights —
the opposite of what a public repo is for, and a blocker on opening anything
else into it. Apache 2.0 was decided for this tier; this is that decision
applied, not a new one.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

package.json

@@ -1,6 +1,7 @@
 {
 	"name": "nestri",
 	"private": true,
+  "license": "Apache-2.0",
 	"workspaces": {
 		"packages": [
 			"apps/*",