Build/Refactor: lint pre-commit hook and reformat repo to spec (#314)

* build/refactor: move lint/prettier packages to project root, install husky, add pre-commit hook

* refactor: reformat files

* build: put full eslintrc back with all rules

.prettierrc.js

@@ -0,0 +1,19 @@
+module.exports = {
+  printWidth: 100,
+  useTabs: false,
+  tabWidth: 2,
+  semi: true,
+  singleQuote: true,
+  // bracketSpacing: false,
+  trailingComma: 'none',
+  arrowParens: 'always',
+  embeddedLanguageFormatting: 'auto',
+  insertPragma: false,
+  proseWrap: 'preserve',
+  quoteProps: 'as-needed',
+  requirePragma: false,
+  rangeStart: 0,
+  endOfLine: 'auto',
+  jsxBracketSameLine: false,
+  jsxSingleQuote: false,
+};