Change Execute Method to cosmos-sdk

[mattverse]

Closes: #523

Description

Unlike most Cosmos SDK based chains, osmosis did not have global flags for log-format and log-level to specify log settings.
This was basically because we had our own method of initializing Cmd in our repo, which was a duplicate method from the sdk.

Thus this PR removes the Execute method that was defined seperately in osmosis and moves the dependency to osmosis-labs/cosmos-sdk, supporting log-format and log-level when running an Osmosis node.

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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 #666 (76ec055) into main (4641e15) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #666   +/-   ##
=======================================
  Coverage   18.41%   18.41%           
=======================================
  Files         172      172           
  Lines       24257    24257           
=======================================
  Hits         4467     4467           
  Misses      19023    19023           
  Partials      767      767           

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[ValarDragon]

Nice catch! Can you add a changelog entry, then we can go ahead and merge this