Create client to establish connection with discord and add basic framework with sample command

cipher_database/src/mysql/schema.rs

@@ -0,0 +1,14 @@
+// @generated automatically by Diesel CLI.
+
+diesel::table! {
+    users (id) {
+        id -> Integer,
+        discord_user_id -> Bigint,
+        #[max_length = 32]
+        pokemon_go_code -> Nullable<Varchar>,
+        #[max_length = 32]
+        pokemon_pocket_code -> Nullable<Varchar>,
+        #[max_length = 32]
+        switch_code -> Nullable<Varchar>,
+    }
+}