Install and set up husky and lint-staged (#161)

* Install and set up husky and lint-staged

* Add a root .lintstagedrc.json

Author: whitphx

.husky/pre-commit

@@ -0,0 +1,4 @@
+#!/usr/bin/env sh
+. "$(dirname -- "$0")/_/husky.sh"
+
+yarn lint-staged

.lintstagedrc.json

@@ -0,0 +1,3 @@
+{
+  "*.{md,json}": "prettier --write"
+}

package.json

@@ -6,10 +6,13 @@
     "streamlit/frontend"
   ],
   "scripts": {
-    "new-version": "lerna version"
+    "new-version": "lerna version",
+    "prepare": "husky install"
   },
   "devDependencies": {
     "@lerna-lite/cli": "^1.11.0",
+    "husky": "^8.0.1",
+    "lint-staged": "^13.0.3",
     "prettier": "2.7.1"
   }
 }

packages/mountable/.lintstagedrc.json

@@ -0,0 +1,4 @@
+{
+  "*.{js,jsx,ts,tsx}": "eslint --cache --fix",
+  "*.{js,jsx,ts,tsx,css,md,json}": "prettier --write"
+}

packages/stlite-kernel/.lintstagedrc.json

@@ -0,0 +1,4 @@
+{
+  "*.{js,jsx,ts,tsx}": "eslint --cache --fix",
+  "*.{js,jsx,ts,tsx,css,md,json}": "prettier --write"
+}