Allow to define multiple engines per note

[antonpodolsky]

• Config file: allow to group engines by note type.
• UI: display an additional dropdown for the engine selection

[frolovv]

@antonpodolsky
can you give an example?
what is note type and what is engine in your proposal?
how does it differ from existing approach?
will it be used for executing the same note on different clusters, prod vs dev for example?

[antonpodolsky]

Yes, the idea is to execute same note on different clusters, without duplicating the note.