Update the mask dict helper

It now goes recursive, is case insenstivie for keys and mask keys requests
Checks not for equal but for start/end or inside with edge character set

pytests added

test-run/iterator_handling/dict_helpers.py

@@ -0,0 +1,63 @@
+"""
+Iterator helper testing
+"""
+
+from corelibs.debug_handling.dump_data import dump_data
+from corelibs.iterator_handling.dict_helpers import mask
+
+
+def __mask():
+    data = {
+        # "user": "john",
+        # "encryption_key": "Secret key",
+        # "ENCRYPTION.TEST": "Secret key test",
+        # "inside_password_test": "Hide this",
+        "password": ["secret1", "secret2"],  # List value gets masked
+        # "config": {
+        #     "db_password": {"primary": "secret", "backup": "secret2"},  # Dict value gets masked
+        #     "api_keys": ["key1", "key2", "key3"]  # List value gets masked
+        # },
+        # "items": [  # List value that doesn't get masked, but gets processed recursively
+        #     {"name": "item1", "secret_key": "itemsecret"},
+        #     {"name": "item2", "passwords": ["pass1", "pass2"]}
+        # ],
+        # "normal_list": ["item1", "item2", "item3"]  # Normal list, not masked
+    }
+    data = {
+        "config": {
+            # "password": ["secret1", "secret2"],
+            # "password_other": {"password": ["secret1", "secret2"]},
+            # "database": {
+            #     "host": "localhost",
+            #     "password": "db_secret",
+            #     "users": [
+            #         {"name": "admin", "password": "admin123"},
+            #         {"name": "user", "secret_key": "user456"}
+            #     ]
+            # },
+            # "api": {
+            #     # "endpoints": ["api1", "api2"],
+            #     "encryption_settings": {
+            #         "enabled": True,
+            #         "secret": "api_secret"
+            #     }
+            # }
+            "secret_key": "normal_value",
+            "api_key": "normal_value",
+            "my_key_value": "normal_value",
+        }
+    }
+    result = mask(data, ['key'])
+    print(f"In: {dump_data(data)}")
+    print(f"Masked: {dump_data(result)}")
+
+
+def main():
+    """
+    Test: corelibs.string_handling.string_helpers
+    """
+    __mask()
+
+
+if __name__ == "__main__":
+    main()