docs: Update integration maintainers list

Author: dermotduffy

README.md

@@ -57,3 +57,9 @@ There is also a [companion Lovelace card](https://github.com/dermotduffy/frigate
 ## Documentation
 
 For full usage instructions, please see the [central Frigate documentation](https://docs.frigate.video/integrations/home-assistant/).
+
+## Maintainers
+
+- [Blake Blackshear](https://github.com/blakeblackshear/)
+- [Dermot Duffy](https://github.com/dermotduffy/)
+- [Nick Mowan](https://github.com/NickM-27)

custom_components/frigate/manifest.json

@@ -2,7 +2,9 @@
     "domain": "frigate",
     "name": "Frigate",
     "codeowners": [
-        "@blakeblackshear"
+        "@blakeblackshear",
+        "@dermotduffy",
+        "@NickM-27"
     ],
     "config_flow": true,
     "dependencies": [