CI: Integrate workflow_triggers for nowinandroid from cartland's fork (#1873)

* Update workflow triggers
- Build.yaml: Add workflow_dispatch, specify branches for pull_request.
- NightlyBaselineProfiles.yaml: Add workflow_dispatch and push (main) triggers.
- Release.yml: Add workflow_dispatch trigger.

* Allow build for PR on all branches

* Remove the push trigger for NightlyBaselineProfiles.yaml

.github/workflows/Build.yaml

@@ -1,6 +1,7 @@
 name: Build
 
 on:
+  workflow_dispatch:
   push:
     branches:
       - main

.github/workflows/NightlyBaselineProfiles.yaml

@@ -1,6 +1,7 @@
 name: NightlyBaselineProfiles
 
 on:
+  workflow_dispatch:
   schedule:
     - cron:  '42 4 * * *'
 

.github/workflows/Release.yml

@@ -1,6 +1,7 @@
 name: GitHub Release with APKs
 
 on:
+  workflow_dispatch:
   push:
     tags:
     - 'v*'