Different db support

[RiccardoM]

Description

Adds the ability to use any of the database backend engines supported by Tendermint while creating new Cosmos databases.

closes: #6218

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[codecov]

Codecov Report

Merging #6219 into master will increase coverage by 0.00%.
The diff coverage is 33.33%.

@@           Coverage Diff           @@
##           master    #6219   +/-   ##
=======================================
  Coverage   54.83%   54.84%           
=======================================
  Files         444      444           
  Lines       26771    26771           
=======================================
+ Hits        14681    14682    +1     
+ Misses      11048    11046    -2     
- Partials     1042     1043    +1     

[tac0turtle]

did you start this branch off a release? I would recommend going off of master

[RiccardoM]

did you start this branch off a release? I would recommend going off of master

Yeah I've started this off of v0.38.3 to make sure it was compatible with 0.38 as well as I think this might be useful to be also in v0.38.4

[RiccardoM]

@marbar3778 Should be cleaner now as I've branched out of master and force pushed

[alessio]

Left a suggestion. Looks good otherwise. Good call

[alexanderbez]

utACK. Have you tried different backends @RiccardoM ?

[RiccardoM]

utACK. Have you tried different backends @RiccardoM ?

I've tried using rocksdb as a backend and and it worked without any problem

[RiccardoM]

Probably this can also be added to 0.38.4 as well