Persist Pebble Hashes during scanner

[Kbhat1]

Describe your changes and provide context

• Persist pebble hashes for the scanner to db itself as metadata

Testing performed to validate your change

• Verified on seidb rpc node

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 61.51%. Comparing base (51f6572) to head (2aea2a7).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
app/test_state_store.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2065   +/-   ##
=======================================
  Coverage   61.51%   61.51%           
=======================================
  Files         264      264           
  Lines       24630    24632    +2     
=======================================
+ Hits        15151    15153    +2     
- Misses       8348     8350    +2     
+ Partials     1131     1129    -2     

Files with missing lines	Coverage Δ
app/test_state_store.go	55.69% <0.00%> (-0.46%)	⬇️

... and 2 files with indirect coverage changes