Fixes and new endpoints

- Fixed doctor and patient PUT queries
- Added patient register
- Added doctor register
- Added email verification check middleware
- Added verified status to doctor table

database.sql

@@ -100,6 +100,7 @@ CREATE TABLE doctors (
   phone VARCHAR(20) NOT NULL,
   speciality VARCHAR(255) NOT NULL,
   status VARCHAR(255) NOT NULL,
+  is_verified BOOLEAN NOT NULL DEFAULT FALSE,
   PRIMARY KEY (id),
   CONSTRAINT dt_user_id
     FOREIGN KEY (user_id)