Build for linux/armhf architecture

[abemedia]

This PR adds armhf architecture (rogchap#97).

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (feat/arm64@233f3c6). Click here to learn what that means.
The diff coverage is n/a.

@@              Coverage Diff              @@
##             feat/arm64       #1   +/-   ##
=============================================
  Coverage              ?   96.53%           
=============================================
  Files                 ?       11           
  Lines                 ?      404           
  Branches              ?        0           
=============================================
  Hits                  ?      390           
  Misses                ?        9           
  Partials              ?        5           

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