Add husky and lint-staged

.husky/pre-commit

@@ -0,0 +1,5 @@
+
+#!/usr/bin/env sh
+. "$(dirname -- "$0")/_/husky.sh"
+
+npx lint-staged

.prettierrc

@@ -0,0 +1,7 @@
+{
+  "semi": true,
+  "trailingComma": "none",
+  "singleQuote": true,
+  "printWidth": 80,
+  "useTabs": false
+}

backend/.eslintrc

@@ -1,18 +1,13 @@
 {
-    "root": true,
-    "parser": "@typescript-eslint/parser",
-    "plugins": [
-      "@typescript-eslint",
-      "prettier"
-    ],
-    "extends": [
-      "eslint:recommended",
-      "plugin:@typescript-eslint/eslint-recommended",
-      "plugin:@typescript-eslint/recommended",
-      "prettier"
-    ],
-    "rules": {
-      "no-console": 2,
-      "prettier/prettier": 2
-    }
-}
+  "parser": "@typescript-eslint/parser",
+  "plugins": ["@typescript-eslint", "prettier"],
+  "extends": [
+    "eslint:recommended",
+    "plugin:@typescript-eslint/eslint-recommended",
+    "plugin:@typescript-eslint/recommended",
+    "prettier"
+  ],
+  "rules": {
+    "no-console": 2
+  }
+}