added code to initialize db with models and recodres

backend/tools/helpers.py

@@ -0,0 +1,18 @@
+import hashlib
+
+
+
+def calculate_md5_checksum(string_to_md5_sum: str):
+    return hashlib.md5(string_to_md5_sum.encode('utf-8')).hexdigest()
+
+
+def file_md5(fname: str) -> str:
+    hash_md5 = hashlib.md5()
+    with open(fname, "rb") as f:
+        for chunk in iter(lambda: f.read(4096), b""):
+            hash_md5.update(chunk)
+    return hash_md5.hexdigest()
+
+
+if __name__ == '__main__':
+    print(file_md5(__file__))