I've noticed that reindenting big file is pretty slow, profiler report indicated that the bottleneck is the calculation of combined indentation rules from default settings and user customizations:

(seq-union (or rules clojure-ts-semantic-indent-rules)             clojure-ts--semantic-indent-rules-defaults             (lambda (e1e2) (equal (car e1) (car e2))))

this is called every time we need to calculate indentation for a single line.

This PR introduces buffer local variableclojure-ts--semantic-indent-rules-cache which stores pre-calculated rules. This variable is set whenclojure-ts-mode is activated and updated every time whenclojure-ts-semantic-indent-rules is updated or file local variables are updated (in case when indentation rules are defined in.dir-locals.el for example.

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