feat(earn): support cross chain swap and deposit

[satish-ravi]

Description

Support cross chain swap and deposit behind a statsig feature gate. UI changes not in scope for this PR and will be in a follow up (showing cross chain fees, updating bottom sheet to no longer show cross chain swap as a separate option, showing cross chain fee error if not enough for gas)

Test plan

Manually tested and ensured

• Right tokens show up in the expected order (same chain first, then cross chain, by balance within each section)
• Tx submitted and executed sucessfully

cross-chain-swap-deposit.mp4

Source chain tx
Destination chain tx
Alexar scan

Related issues

• Part of ACT-1507

Backwards compatibility

Y

Network scalability

If a new NetworkId and/or Network are added in the future, the changes in this PR will:

• Continue to work without code changes, OR trigger a compilation error (guaranteeing we find it when a new network is added)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.04%. Comparing base (1421494) to head (623e668).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6382   +/-   ##
=======================================
  Coverage   89.03%   89.04%           
=======================================
  Files         735      735           
  Lines       31327    31345   +18     
  Branches     5812     5821    +9     
=======================================
+ Hits        27892    27910   +18     
+ Misses       3242     3241    -1     
- Partials      193      194    +1     

Files with missing lines	Coverage Δ
src/analytics/Properties.tsx	100.00% <ø> (ø)
src/earn/EarnDepositBottomSheet.tsx	98.78% <100.00%> (+0.01%)	⬆️
src/earn/EarnEnterAmount.tsx	94.98% <100.00%> (+1.58%)	⬆️
src/earn/prepareTransactions.ts	100.00% <ø> (ø)
src/earn/saga.ts	95.76% <100.00%> (+0.11%)	⬆️
src/statsig/types.ts	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes

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