chore: make workflows manually runnable (#195)

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Fixes #<issue_number_goes_here> 🦕

Author: kabir

.github/workflows/build-and-test.yml

@@ -4,6 +4,7 @@ on:
   # Handle all branches for now
   push:
   pull_request:
+  workflow_dispatch:
 
 # Only run the latest job
 concurrency:

.github/workflows/run-tck.yml

@@ -8,6 +8,7 @@ on:
   pull_request:
     branches:
       - main
+  workflow_dispatch:
 
 env:
   # Tag of the TCK