Svelte TS port: checks

[gcsecsey]

Pull Request Template

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context.

Related to #127

In this PR I've performed some checks before :

• added some files that were missing in the TS project
• packaged and tested the package as a dependency

Next steps

• npm run check still produces some type errors that needs to be fixed
• the Table and Pagination components still need to be added to package_test and the components index
• there were some formatting differences when I modified files, maybe we'll need to do an PR with 'npm run format'

Checklist:

Please delete options that are not relevant.

• [X] Have you submitted new feature or bugfix issue? Unless it's a small bugix, we generally prefer to track PRs against an issue which starts a dialogue to give us context.
• [X] Does this add a new component? If so, have you updated all framework's copystyles.js to pull in said CSS and verified it's working properly?
• [X] Tests passing?
• [X] Have you added to the framework's /examples apps? e.g. agnosticui-react/examples? These are kitchen sink sanity checks which help to verify a component is working and derive documentation snippets.

We realize above checklist is pretty intimidating, reach out with an at mention on your issue if you're interested in contributing but need some clarifications!

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[roblevintennis]

Thanks @gcsecsey -- I don't have time to pull this down and test it but I gave the code a look twice and everything seems to make sense to me. I appreciate it! 🚀 💪