Add stake application modal

[agnieszkajarosikloj]

Description

This PR adds stake application modal (UI only). Modal is displayed after clicking on the submit button (if there are no errors in the form). When you confirm with 'Stake' only stage will change, locked form state in prepared on another branch. Token and value to stake are mocks. No action will be triggered after submission. Placeholder is added there.

Force toggle is visible only when voting extension is enabled (I'm not sure if this is a sufficient condition. I will be appreciate for suggestions).

Modal is accessible at: /incorporation/create route.

New stuff ✨

• StakeApplicationDialog

Figma Link https://www.figma.com/file/fmnKIUY0LGfEnsOOQloVVX/Korporatio?node-id=976%3A109828&t=KEb9kY258xivL7Gz-0

Resolves #4127

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