Gaia v7 with pebbledb support

[faddat]

This is a draft PR for review, of Gaia with PebbleDB.

I am testing against Gaia, because I am having some issues that I suspect may be caused by fast IAVL, so currently doing the same thing for Gaia, that I am doing for Osmoisis, specifically, attempting a sync from genesis. My early findings with Pebble are that it outperforms rocks, while avoiding the troubles of CGO. Both the valnodes team and the notional team have contributed to the PebbleDB implmeentation, in an attempt to get a more rigorous understanding of database performance in cosmos.

[codecov]

Codecov Report

Merging #1413 (f2531cd) into main (8938fe4) will not change coverage.
The diff coverage is n/a.

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##             main    #1413   +/-   ##
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  Coverage   12.13%   12.13%           
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  Files           9        9           
  Lines        1327     1327           
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  Hits          161      161           
  Misses       1160     1160           
  Partials        6        6           

[faddat]

There are two related pull requests:

Rocksdb v7 with grocksdb, deprecating cosmos/gorocksdb
PebbleDB (draft implementation)

[okwme]

thanks @faddat , i think the choice to switch db should be considered at the level of the SDK rather on a per-app basis. What do you think about moving this to https://github.com/cosmos/cosmos-sdk?

[faddat]

Billy, unfortunately, this PR is left over from an effort that has failed.

Thanks for your input but I'll need to close this one. I'll continue to work on pebble as best I can.