add typeorm, refactor controller, router, create data access layer

.eslintrc

@@ -13,7 +13,8 @@
     "prettier/prettier": ["error", { "singleQuote": true }],
     "@typescript-eslint/explicit-function-return-type": "error",
     "@typescript-eslint/no-explicit-any": 1,
-    "@typescript-eslint/no-inferrable-types": ["error", { "ignoreParameters": true }]
+    "@typescript-eslint/no-inferrable-types": ["error", { "ignoreParameters": true }],
+    "@typescript-eslint/interface-name-prefix": ["error", { "prefixWithI": "always" }]
   },
   "env": {
     "node": true

.gitignore

@@ -1,3 +1,4 @@
 dist/
 node_modules/
 coverage/
+*.sqlite

ormconfig.json

@@ -0,0 +1,20 @@
+{
+  "type": "sqlite",
+  "database": "database.sqlite",
+  "synchronize": true,
+  "logging": false,
+  "entities": [
+    "src/app/data/entities/**/*.entity.ts"
+  ],
+  "migrations": [
+    "src/app/data/migrations/**/*.ts"
+  ],
+  "subscribers": [
+    "src/app/data/subscribers/**/*.subscriber.ts"
+  ],
+  "cli": {
+    "entitiesDir": "src/app/data/entities",
+    "migrationsDir": "src/app/data/migrations",
+    "subscribersDir": "src/app/data/subscribers"
+  }
+}