Finalise release metadata and add licence

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Seb's Space
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -187,4 +187,4 @@ FOSSBilling or adding hooks that send emails during ticket creation.
 
 ## License
 
-Apache-2.0.
+MIT. See [LICENSE](LICENSE).

manifest.json

@@ -5,5 +5,5 @@
   "description": "Import incoming email into FOSSBilling support tickets.",
   "author": "Seb's Space",
   "version": "0.1.0",
-  "license": "Apache-2.0"
+  "license": "MIT"
 }