feat(Calendar): [BLA-694] add months and years views to calendar

[DushanNovak1983]

TODOs:

• implement months view
• implement years view
• add storybook documentation
• implement closing calendar on escape (on all views)
• implement closing calendar on backdrop (on all views)
• write unit tests
• write e2e tests

REMARKS:

• im not sure why some files are being re-formatted when building the code. I work with IntelliJ, do you maybe have some additional configuration on your mashines regarding eslint/prettier? This needs to be fixed or addressed in the documentation.
• as already discussed with Vishwa, for some reason, some unit-tests are failing on my machine locally. But the reason is that when running npm run test the transpiled .js files from the dist folder are also being executed. What i did locally is running the tests with npx stencil test --spec --e2e -- src/components/. This needs to be fixed or addressed in the documentation.