Add API client and CDN manager implementation

- Introduced `ApiClient` class for handling API interactions, including authentication and resource management.
- Added `CDNManager` class for managing file uploads and downloads to/from a CDN.
- Implemented security features for encryption and decryption of sensitive data.
- Created supporting classes for credentials, user roles, and hardware information retrieval.
- Established constants for configuration and logging.

This commit lays the foundation for resource management and secure communication with the API and CDN services.

src/security.pxd

@@ -0,0 +1,20 @@
+from credentials cimport Credentials
+
+cdef class Security:
+    @staticmethod
+    cdef encrypt_to(input_stream, key)
+
+    @staticmethod
+    cdef decrypt_to(input_bytes, key)
+
+    @staticmethod
+    cdef get_hw_hash(str hardware)
+
+    @staticmethod
+    cdef get_api_encryption_key(Credentials credentials, str hardware_hash)
+
+    @staticmethod
+    cdef get_resource_encryption_key()
+
+    @staticmethod
+    cdef calc_hash(str key)