Add riscv build

[tezc]

No description provided.

[codecov]

Codecov Report

Merging #125 (50caa35) into master (4111900) will not change coverage.
The diff coverage is n/a.

❗ Current head 50caa35 differs from pull request most recent head 0a6bc99. Consider uploading reports for the commit 0a6bc99 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #125   +/-   ##
=======================================
  Coverage   99.81%   99.81%           
=======================================
  Files          21       21           
  Lines        2195     2195           
  Branches      388      388           
=======================================
  Hits         2191     2191           
  Misses          1        1           
  Partials        3        3           

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