add ESLint + prettier config

.eslintrc.yml

@@ -0,0 +1,29 @@
+env:
+  browser: true
+  es2021: true
+extends:
+  - plugin:prettier/recommended
+  - eslint:recommended
+  - plugin:react/recommended
+  - plugin:@typescript-eslint/recommended
+overrides: []
+parser: '@typescript-eslint/parser'
+parserOptions:
+  ecmaVersion: latest
+  sourceType: module
+plugins:
+  - react
+  - '@typescript-eslint'
+rules:
+  indent:
+    - error
+    - 2
+  linebreak-style:
+    - error
+    - unix
+  #quotes:
+  #  - error
+  #  - double
+  semi:
+    - error
+    - never

.prettierrc

@@ -0,0 +1,8 @@
+{
+  "semi": false,
+  "tabWidth": 2,
+  "printWidth": 100,
+  "singleQuote": false,
+  "trailingComma": "none",
+  "jsxBracketSameLine": true
+}