Table component with filter and search (#600)

* Initial table component with storybook example

* Moved dependencies to package/core

* Removed dependency to @backstage/core from base package.json

* Clean up some examples and remove type from columns, replacing with property align instead

* Removed more unused stuff and added toggle for filter input

* Fixed some lint issues

* Added example with material-table

* Convert column array passed into MaterialTable Backstage component into MT column array. Allow multiple values in one cell

* Removed subheader from MT

* Nicer double value cell

* Added custom sorting to example

* Cleaned up stories a bit

* Setting field instead of customSort

* Improve styling. Still needs better theme integration

* Using more colors from theme

* Fixed typing issue

* Removed react-table implementation and cleaned up material-table implementation

* Fixed some type issues

* Fixed lint issues

packages/storybook/.storybook/main.js

@@ -11,7 +11,7 @@ module.exports = {
     '@storybook/addon-storysource',
     'storybook-dark-mode/register',
   ],
-  webpackFinal: async config => {
+  webpackFinal: async (config) => {
     const coreSrc = path.resolve(__dirname, '../../core/src');
 
     config.resolve.alias = {