Add generic tools installation support

[LinuxSuRen]

• Add generic installer support
• basic function for generic install
• basic function for generic install
• basic function for generic install
• Add a link of the audacity-label-plugin
• Add a link of the audacity-label-plugin

[codecov]

Codecov Report

Merging #252 (2611f8d) into master (c3ef37d) will decrease coverage by 0.01%.
The diff coverage is 28.00%.

@@            Coverage Diff             @@
##           master     #252      +/-   ##
==========================================
- Coverage   26.37%   26.35%   -0.02%     
==========================================
  Files          27       28       +1     
  Lines        1805     1878      +73     
==========================================
+ Hits          476      495      +19     
- Misses       1304     1358      +54     
  Partials       25       25              

Flag	Coverage Δ
unittests	26.35% <28.00%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/os/generic_installer.go	16.92% <16.92%> (ø)
pkg/os/installer.go	84.74% <100.00%> (+2.39%)	⬆️

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