refactor: show more tags

fix: loss of items in filtered state

Fixes a bug where the stack list would loose elements after a user
fetched the status of a stack from a filtered state. This would happen
because the stack reserve was configured to be replaced by the current
list's items on receiving a `TemplateFetchedMsg` message.

docs(readme): add screenshots

refactor: move ui to internal

feat: add regex filtering for stack names

feat: add cli mode

refactor code into ui package

chore: change list padding

reuse aws configs

better help

add some filtering capability