Set up native messaging with debian packages (#6)

Reviewed-on: #6
Co-authored-by: Julien Fastré <julien.fastre@champs-libres.coop>
Co-committed-by: Julien Fastré <julien.fastre@champs-libres.coop>

web-extension/_native-messaging/cl_cli.json

@@ -0,0 +1,7 @@
+{
+  "name": "cl_cli",
+  "description": "Call cl-cli from browser",
+  "path": "/usr/bin/cl-webext",
+  "type": "stdio",
+  "allowed_extensions": ["helper@champs-libres-coop"]
+}

web-extension/cl/package.json

@@ -12,7 +12,7 @@
   },
   "keywords": [],
   "author": "",
-  "license": "ISC",
+  "license": "GPL-3.0-or-later",
   "type": "commonjs",
   "devDependencies": {
     "@types/firefox-webext-browser": "^143.0.0",