Format code with Runic.jl, add .github/workflows/Runic.jl

[hyrodium]

Since there are no open PRs at the moment, it's a good time to format the code with Runic.jl.

[codecov]

Codecov Report

❌ Patch coverage is 98.55372% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 96.97%. Comparing base (ae97d88) to head (021fb58).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/gausslaguerre.jl	95.74%	4 Missing ⚠️
src/besselroots.jl	97.33%	2 Missing ⚠️
src/gaussjacobi.jl	99.48%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #142   +/-   ##
=======================================
  Coverage   96.97%   96.97%           
=======================================
  Files           9        9           
  Lines        1387     1387           
=======================================
  Hits         1345     1345           
  Misses         42       42           

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