Improve performance of clojure-ts-align

[rrudakov]

Cache semantic indentation rules for a single clojure-ts-align run to avoid lookup for every repeating symbol.

Context: I noticed that clojure-ts-align can be quite slow when aligning very large expressions (i.e. large EDN system configurations or large integration test functions). clojure-ts-mode performs lookup for an indentation rule for every symbol, with CIDER connected it also involves nREPL communication.

I've been using this improved version for a very long time and haven't noticed any downsides.

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