Show larger input for the changelog

[ssddanbrown]

Describe the feature you'd like

Currently the changelog field is quite cramped to a single line text input which makes it hard to provide more that 5 words.
While the field is meant to be small to encourage succinct changelog messages (since they're displayed in tabular form) I think a better UX would be a larger text area field with a text limit indicator.

Describe the benefits this would bring to existing BookStack users

A less awkward editing experience when filling the changelog message.

Can the goal of this request already be achieved via other means?

Only via JS/theme hackery to alter the input.

Have you searched for an existing open/closed issue?

• I have searched for existing issues and none cover my fundamental request

How long have you been using BookStack?

1 to 5 years

Additional context

This issue was raised on the behalf of a BookStack support customer via ticket 132