Superfluid staking PR

[xBalbinus]

Closes: #1073

Description

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For contributor use:

• Targeted PR against correct branch (see CONTRIBUTING.md)
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
• Re-reviewed Files changed in the Github PR explorer

[codecov-commenter]

Codecov Report

Merging #1283 (0b9d493) into main (7d45d8e) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1283   +/-   ##
=======================================
  Coverage   20.08%   20.08%           
=======================================
  Files         203      203           
  Lines       26786    26786           
=======================================
  Hits         5379     5379           
  Misses      20409    20409           
  Partials      998      998           

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[xBalbinus]

This PR does:

• Merges all MD files into one ginormous README for easy reading
• A brief added introduction docs to the superfluid state machine itself.

[daniel-farina]

lgtm. This closes #1073. Update PR with link to it.

[ValarDragon]

The initial section is much better! I'm also a big fan of everything in a single file, I never liked the spec folder breakdown