add videohash support

[codecov-commenter]

Codecov Report

Merging #116 (3b43979) into main (ad931d3) will decrease coverage by 0.21%. The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #116      +/-   ##
==========================================
- Coverage   87.20%   86.99%   -0.22%     
==========================================
  Files          34       34              
  Lines        3759     3759              
  Branches      543      543              
==========================================
- Hits         3278     3270       -8     
- Misses        271      277       +6     
- Partials      210      212       +2     

Impacted Files	Coverage Δ
namer/command.py	81.60% <0.00%> (-3.84%)	:arrow_down:
test/web/namer_web_pageobjects.py	86.06% <0.00%> (+0.81%)	:arrow_up:

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[DirtyRacer1337]

You still need ImageHash module to calculate distances, check tests

[DirtyRacer1337]

also, it's builded already, https://github.com/peolic/videohashes/releases

[4c0d3r]

There's a comparison executable (haven't tried it yet), but I'm hoping to use that as well to determine distance/matches - copied it over.

[DirtyRacer1337]

it's faster that run exe

[4c0d3r]

@DirtyRacer1337 even though it's built already, it wasn't built with GitHub actions, so the provenance of the executables can't be verified by the curious user. I'm moving the build here so that the source of the artifacts can be verified.

[4c0d3r]

Still a WIP but much improved installation and workflow, so merging. Also think the race condition in watchdog tests might be solved, else good logging will help identify the problem.