Fix/osmosis fee 1e 3

[nseguias]

Description and Motivation

This PR validates that on pool creation, the osmosis swap fee is set to 0.001

Related Issues

#375

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Checklist:

• I have read Migaloo's contribution guidelines.
• My pull request has a sound title and description (not something vague like Update index.md)
• All existing and new tests are passing.
• I updated/added relevant documentation.
• The code is formatted properly cargo fmt --all --.
• Clippy doesn't report any issues cargo clippy -- -D warnings.
• I have regenerated the schemas if needed cargo schema.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.93%. Comparing base (2f40957) to head (e685099).
Report is 4 commits behind head on release/v2_contracts.

Additional details and impacted files

@@                   Coverage Diff                    @@
##           release/v2_contracts     #377      +/-   ##
========================================================
+ Coverage                 90.90%   90.93%   +0.02%     
========================================================
  Files                       280      280              
  Lines                     31830    31915      +85     
========================================================
+ Hits                      28936    29022      +86     
+ Misses                     2894     2893       -1     

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