Collections auto mapping

[qurle]

Idea by @mckls mentioned in #4

I use multiple collections. I need to map each collection individually. The idea would include an "any" option for source and swap to so collections are mapped like the following:

• lib 1 collection 1 -> lib 2 collection 1
• lib 1 collection 2 -> lib 2 collection 2

Not that simple, but feels useful.
It seems to look like:

• Lib 1 (Auto) → Lib 2 (Auto) resolves to swap all collections from Lib 1 to Lib 2
• Lib 1 (Auto) → Lib 2 Collection 1 resolves to swap Collection 1 from Lib 1 to Lib 2
  - Lib 1 Collection 1 → Lib 2 (Auto) resolves to swap Collection 1 from Lib 1 to Lib 2

This would require some logic changes, so can’t promise it will be released soon.