Add Switchbot cover is_closed, is_opening, is_closing logic

[BelowAverageDev]

Fix device class for blind and add logic to set the following:

• is_closed
• is_opening
• is_closing

[home-assistant]

Hi BelowAverageDev

It seems you haven't yet signed a CLA. Please do so here.

Once you do that we will be able to review and accept this pull request.

Thanks!

[home-assistant]

Hey there @bdraco, @Danielhiversen, @RenierM26, @murtas, @Eloston, @dsypniewski, mind taking a look at this pull request as it has been labeled with an integration (switchbot) you are listed as a code owner for? Thanks!

Code owner commands

Code owners of switchbot can trigger bot actions by commenting:

• @home-assistant close Closes the issue.
• @home-assistant rename Awesome new title Change the title of the issue.
• @home-assistant reopen Reopen the issue.
• @home-assistant unassign switchbot Removes the current integration label and assignees on the issue, add the integration domain after the command.

[BelowAverageDev]

Note this pr targets home-assistant:jesserockz-2023-027, not dev.
Because @jesserockz branched on origin instead of a fork, I have to pr here instead of downstream. Code owners please re-assign. Sorry!