[TASK](ui): Migrate ThemeToggle to Typescript

[guoda-puidokaite]

Task Description

We need to convert ThemeToggle from @cloudoperators/juno-ui-components to TypeScript.

Sub-tasks

• change the name to .tsx of all related components
• Change the stories to .tsx and all related componetns
• fix all errors related to npm run typecheck
• Transfer all related tests to vitests from jest
• Check if npm run build is working and prove the working parts in storybook or example app
• Check that npm run lint is working correctly and fix all tslint errors

Related Issues

• [EPIC]: @cloudoperators/juno-ui-components migrate UI Components to TypeScript #168

Additional Context
Please check this online codemode editor to change the PropTypes to a proper Ts interfaces

https://github.com/mskelton/ratchet
Online editor: https://ratchet.mskelton.dev/

We need to be pretty concious about migration to ts cause it could create a potential breaking changes. Also if there will be too much changes at once maybe consider to split up the task again. Also some dependencies could be hidden and only discovered while executing the migration, could also lead to potential reconsidering the order of task execution.