[WIP] bring back MQF

[luizirber]

I commented out the MQF parts for the #424 and #773 merges.

Since #773 also added CI checks to verify

1. if the rust crate is publishable (long story short: a crate can only be published if all dependencies are also in crates.io), and
2. if the crate build on macOS and Windows

The MQF code was failing because 2 is not working. Opening this as a standing PR while fixes are pushed to the MQF repo to make this all work.

Checklist

• Is it mergeable?
• make test Did it pass the tests?
• make coverage Is the new code covered?
• Did it change the command-line interface? Only additions are allowed
  without a major version increment. Changing file formats also requires a
  major version number increment.
• Was a spellchecker run on the source code and documentation after
  changes were made?

[codecov]

Codecov Report

Merging #800 into master will decrease coverage by 0.24%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #800      +/-   ##
==========================================
- Coverage   79.59%   79.35%   -0.25%     
==========================================
  Files          45       46       +1     
  Lines        6588     6684      +96     
  Branches      454      467      +13     
==========================================
+ Hits         5244     5304      +60     
- Misses       1043     1069      +26     
- Partials      301      311      +10

Impacted Files	Coverage Δ
src/index/mod.rs	56.3% <ø> (ø)	⬆️
src/index/sbt/mod.rs	60.26% <ø> (ø)	⬆️
src/index/sbt/mhmt.rs	60.63% <100%> (ø)
src/lib.rs	60.89% <0%> (+1.15%)	⬆️

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[luizirber]

Punted for #812