chore(storage): Consolidate deposits storage 2/3

[abi87]

Introduce deposit store v2 which leverate a IAVL store to efficiently calculate deposits root.
While v1 needs to load all historical deposits and hash them together to get said root, which is a O(N) operation, the merkleDB allows doing it with O( log N) complexity (what it takes to recalculate the root of an append only tree), at the cost of somewhat larger storage (in a complete binary tree, there are as many intermediate nodes as leaves, so say double storage).
Data migration code is added, which allow a coordinate transfer of deposits from storeV1 to storeV2 but code is not hooked up to production code.

[codecov]

Codecov Report

❌ Patch coverage is 61.72249% with 80 lines in your changes missing coverage. Please review.
✅ Project coverage is 62.76%. Comparing base (b4a1676) to head (48155ab).

Files with missing lines	Patch %	Lines
storage/deposit/v2/store.go	64.34%	34 Missing and 12 partials ⚠️
storage/deposit/store.go	58.10%	24 Missing and 7 partials ⚠️
node-core/components/deposit_store.go	50.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2779      +/-   ##
==========================================
+ Coverage   62.63%   62.76%   +0.13%     
==========================================
  Files         353      354       +1     
  Lines       16943    17146     +203     
==========================================
+ Hits        10612    10762     +150     
- Misses       5480     5514      +34     
- Partials      851      870      +19     

Files with missing lines	Coverage Δ
node-core/components/deposit_store.go	71.42% <50.00%> (-8.58%)	⬇️
storage/deposit/store.go	66.05% <58.10%> (-19.32%)	⬇️
storage/deposit/v2/store.go	64.34% <64.34%> (ø)

... and 3 files with indirect coverage changes

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