Fix/additional coding style

[niyarin]

This PR adds clj-kondo's default off linter to clj-lint-action and fixes the warned code.
#273

[codecov]

Codecov Report

Merging #279 (63fda34) into master (cb87a24) will not change coverage.
The diff coverage is 33.33%.

@@           Coverage Diff           @@
##           master     #279   +/-   ##
=======================================
  Coverage   88.85%   88.85%           
=======================================
  Files          78       78           
  Lines        6512     6512           
  Branches      458      458           
=======================================
  Hits         5786     5786           
  Misses        268      268           
  Partials      458      458           

Impacted Files	Coverage Δ
src/cljam/tools/cli.clj	59.74% <0.00%> (ø)
src/cljam/io/fasta/reader.clj	91.71% <100.00%> (ø)

[r6eve]

This PR looks good to me.
In addition, according to Clojure Style Guide, I'd prefer the warn of Shadowed var. Cljam uses clojure.core vars as the name of fileds, and it's not easy to rename all fields that are used. So, I recommend to use :refer-clojure :exclude [VAR], and clojure.core/VAR if VAR are used as both user-defined vars and core vars in the same file.

[alumi]

Thank you for addressing the coding conventions. Your efforts are greatly appreciated 👍
I think the changes look good, except for the point @r6eve made.
Further modifications to :shadowed-var and :missing-docstring would be nice. Commits for these may be included in this pull request, or they may be established separately.

[niyarin]

I will fix:shadowed-var and :missing-docstring in another PR.

[r6eve]

I got it. Thank you for this and another PR.