ci: add workflow_dispatch trigger to YAML files

* Enable manual triggering of workflows for examples, publishing, and URLSessionExtension.
* Enhances flexibility in workflow execution.

Author: nbransby

.github/workflows/URLSessionExtension.yml

@@ -16,6 +16,7 @@ on:
       - 'Tests/URLSessionExtensionTests/**.swift'
       - '.github/workflows/URLSessionExtension.yml'
   workflow_call:
+  workflow_dispatch:
 concurrency:
   # Limit concurrency to 1 for PRs. 'main' concurrency isn't limited.
   group: ${{ github.head_ref || github.run_id }}

.github/workflows/examples.yml

@@ -16,6 +16,7 @@ on:
       - 'Examples/**.swift'
       - '.github/workflows/examples.yml'
   workflow_call:
+  workflow_dispatch:
 concurrency:
   # Limit concurrency to 1 for PRs. 'main' concurrency isn't limited.
   group: ${{ github.head_ref || github.run_id }}

.github/workflows/publish.yml

@@ -3,6 +3,7 @@ name: Publish
 on:
   release:
     types: [released, prereleased]
+  workflow_dispatch:
 
 jobs:
   docc: