feat(auth): implement JWT authentication and user registration

- Added JWT authentication with token generation and validation.
- Introduced user registration functionality with email and password.
- Integrated Argon2 for password hashing.
- Created SQLite user repository for user data persistence.
- Updated application context to include user repository and configuration settings.
- Added environment variable support for JWT secret and registration allowance.
- Enhanced error handling for unauthorized access and validation errors.
- Updated presentation layer to handle login and registration requests.

.sqlx/query-167481bb1692cc81531d9a5cd85425e43d09a6df97c335ac347f7cfd61acd171.json

@@ -0,0 +1,32 @@
+{
+  "db_name": "SQLite",
+  "query": "SELECT id, email, password_hash FROM users WHERE email = ?",
+  "describe": {
+    "columns": [
+      {
+        "name": "id",
+        "ordinal": 0,
+        "type_info": "Text"
+      },
+      {
+        "name": "email",
+        "ordinal": 1,
+        "type_info": "Text"
+      },
+      {
+        "name": "password_hash",
+        "ordinal": 2,
+        "type_info": "Text"
+      }
+    ],
+    "parameters": {
+      "Right": 1
+    },
+    "nullable": [
+      false,
+      false,
+      false
+    ]
+  },
+  "hash": "167481bb1692cc81531d9a5cd85425e43d09a6df97c335ac347f7cfd61acd171"
+}

.sqlx/query-18de90feb13b9f467f06d0ce25332d9ea7eabc99d9f1a44694e5d10762606f82.json

@@ -0,0 +1,12 @@
+{
+  "db_name": "SQLite",
+  "query": "INSERT OR IGNORE INTO users (id, email, password_hash, created_at) VALUES (?, ?, ?, ?)",
+  "describe": {
+    "columns": [],
+    "parameters": {
+      "Right": 4
+    },
+    "nullable": []
+  },
+  "hash": "18de90feb13b9f467f06d0ce25332d9ea7eabc99d9f1a44694e5d10762606f82"
+}