Add IBC trigger amount to claims merge/migrate IBC callbacks

[danburck]

Description

This PR adds an additional encumbrance (packet amount IBCTriggerAmt) for users to merge/migrate their non-Evmos claims records.

[linear]

ENG-100 Users might accidentally transfer their claims to an address they don’t own

Claims records on Osmosis/Cosmos can be merged or migrated to an Evmos address by performing an IBC transfer. To prevent this from happening by accident, an additional step can be added for user who want to merge or migrate their claims.

=> only merge/migrate, when IBC tx has specified amount (e.g. 0.0003940000000). This reduces the surface area of possible harm to the majority of users.

[codecov]

Codecov Report

Merging #432 (af13c3e) into main (e776e09) will increase coverage by 0.02%.
The diff coverage is 87.50%.

@@            Coverage Diff             @@
##             main     #432      +/-   ##
==========================================
+ Coverage   78.76%   78.78%   +0.02%     
==========================================
  Files         105      105              
  Lines        5876     5896      +20     
==========================================
+ Hits         4628     4645      +17     
- Misses       1086     1088       +2     
- Partials      162      163       +1     

Impacted Files	Coverage Δ
x/claims/types/claims_record.go	100.00% <ø> (ø)
x/claims/keeper/ibc_callbacks.go	97.67% <72.72%> (-2.33%)	⬇️
ibc/utils.go	100.00% <100.00%> (ø)