add eslint and fix hooks violations

Author: rwieruch

.eslintrc

@@ -0,0 +1,14 @@
+{
+  "env": {
+    "browser": true,
+    "es6": true,
+    "node": true
+  },
+  "extends": ["airbnb", "prettier"],
+  "plugins": ["prettier", "react-hooks"],
+  "rules": {
+    "prettier/prettier": ["error"],
+    "react-hooks/rules-of-hooks": "error",
+    "react-hooks/exhaustive-deps": "warn"
+  }
+}