Plan examples workflow (#53)

Co-authored-by: Bonthu <vabonthu@c889f3b8acd3.ant.amazon.com>

.github/workflows/plan-examples.py

@@ -0,0 +1,25 @@
+import json
+import glob
+import re
+
+
+def get_examples():
+    """
+    Get all Terraform example root directories using their respective `versions.tf`;
+    returning a string formatted json array of the example directories minus those that are excluded
+    """
+    exclude = {
+        '',  # Add examples here to exclude from terraform plan
+    }
+
+    projects = {
+        x.replace('/versions.tf', '')
+        for x in glob.glob('examples/**/versions.tf', recursive=True)
+        if not re.match(r'^.+/_', x)
+    }
+
+    print(json.dumps(list(projects.difference(exclude))))
+
+
+if __name__ == '__main__':
+    get_examples()