Added check_migrations.py to check new migration files

.github/scripts/check_migrations.py

@@ -0,0 +1,52 @@
+import subprocess
+import sys
+
+
+def get_diff():
+    subprocess.run(
+        ["git", "fetch", "origin"], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL
+    )
+    output = [
+        f"./{file_path}"
+        for file_path in subprocess.check_output(
+            ["git", "diff", "--name-only", "origin/develop"]
+        )
+        .decode()
+        .splitlines()
+    ]
+    if not output:
+        output = [
+            f"./{file_path}"
+            for file_path in subprocess.check_output(
+                ["git", "diff", "--name-only", "origin/main"]
+            )
+            .decode()
+            .splitlines()
+        ]
+    return output
+
+
+def check_migration_file(file):
+    with open(file) as f:
+        contents = f.read()
+
+    keywords = ["DeleteModel", "AlterField"]
+    if any(keyword in contents for keyword in keywords):
+        print(f"Warning: {file} contains a migration that may cause data loss.")
+        return True
+
+
+def main():
+    file_diff = get_diff()
+
+    migration_alert = False
+    for file in file_diff:
+        if "/migrations/" in file and file.endswith(".py"):
+            migration_alert = check_migration_file(file)
+    if migration_alert:
+        print("Please review the migrations before pushing, to ensure no loss of data.")
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()