added pull_request event with options

Author: prasad-sawantdesai

.github/workflows/linting.yml

@@ -1,6 +1,9 @@
 name: linting-and-code-formatting
 
-on: push
+on: 
+  push:
+  pull_request:
+    types: [opened, synchronize, reopened]
 
 jobs:
   build:

.github/workflows/publish.yml

@@ -1,6 +1,9 @@
 name: build-wheel-and-publish-test-pypi
 
-on: push
+on:
+  push:
+  pull_request:
+    types: [opened, synchronize, reopened]
 
 jobs:
   build:

.github/workflows/test_with_pytest.yml

@@ -1,6 +1,9 @@
 name: Test using pytest
 
-on: push
+on: 
+    push:
+    pull_request:
+      types: [opened, synchronize, reopened]
 
 jobs:
   test: