Replacer Sequelize for TypeORM

This decision was made because it's become apparent that the Sequelize TS support is more of an afterthought than an actual feature.
TypeORM, on the other hand, seems to achieve what Sequelize does in far less lines of code.

package.json

@@ -38,12 +38,11 @@
         "cors": "^2.8.5",
         "express": "^4.17.1",
         "helmet": "^4.4.1",
+        "mariadb": "^2.5.4",
         "morgan": "^1.10.0",
         "mysql": "^2.18.1",
         "nodemailer": "^6.6.3",
-        "uuid": "^8.3.2",
-        "mariadb": "^2.5.4",
-        "sequelize": "^6.6.5"
+        "typeorm": "^0.2.35"
     },
     "devDependencies": {
         "@types/cors": "^2.8.12",