New package: rsgain-3.4.0

[dezifit]

rsgain (really simple gain) is a very heavily modified fork of loudgain, and is licensed accordingly under the original 2 clause BSD license used by loudgain.

Testing the changes

• I tested the changes in this PR: YES

New package

• This new package conforms to the package requirements: YES

Local build testing

• I built this PR locally for my native architecture, x86_64-glibc
• I built this PR locally for these architectures (if supported. mark crossbuilds):
  • armv7l (only compiled, not tested)

[github-actions[bot]]

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