feat(Icon): expose Icon component

Now you will be able to use the Icon component in your own codebase by supplying your own SVG content/icon.

perf: use ESbuild instead of Rollup

Rollup requires way more external plugins and is slower than ESbuild

feat(clover): add Clover icon

fix: add prepublishOnly script

we're having problems with publishing our package. Somehow our dist files aren't published. This can
hopefully fix it.

fix: add files property to package.json

we're having problems with packaging the library. with this commit we're assigning dist as the files
to package in our package.json file

style: formatted the code so the validate job can pass

feat(filter): add new filter icon

fix(storybook): Adjust config for storybook 6

feat(flag): add new flag icon

feat(copy): Add copy icon