Add launch status sensor for launch_library

[DurgNomis-drol]

Breaking change

Proposed change

Add a launch status sensor showing the status (Go/NoGo/In-flight/Hold or other reason). And if the in hold, show the reason as an attribute.

Right now the update interval is set at an hour, but should we consider making this more frequent, like half an hour instead? I have tested it local for some time now, and I have not run into any problems with it being at half an hour. As this sensor benefits a lot from more frequent updates.

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[probot-home-assistant]

Hey there @ludeeus, mind taking a look at this pull request as it has been labeled with an integration (launch_library) you are listed as a code owner for? Thanks!
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[ludeeus]

Looks good 👍