Cardano Updates

Added handling of pre-defined DReps when calculating the earliest epoch
for which fetch the voting power

## Description
<!--- Describe your changes -->

## Which issue it fixes?
<!--- Link to issue: Closes #issue-number -->

Co-authored-by: RdLrT <[email protected]>

## Description
<!--- Describe your changes -->
- [x] Instead of filtering for deregistration certificate (which leaves
no way to check if pool has their status as registered or deregistered),
add a field for calidus key's registration status
- [x] Add entire tx_metadata.bytes field
- Need to look for a way to include this without causing the function to
inline, as we want the limits and filters to apply to underlying query
- Cancelled adding optional flag, as there isnt a way to do this without
inlining SQL. On consumption side, this can ofcourse be filtered by
specifying columns to return

## Which issue it fixes?
<!--- Link to issue: Closes #issue-number -->
#343

Added handling of pre-defined DReps when calculating the earliest epoch for which fetch the voting power

## Description
<!--- Describe your changes -->
Adds an endpoint to retrieve treasury donation transactions per epoch.

```
cexplorer=# select * from grest.tx_treasury_donations_epoch(942);
-[ RECORD 1 ]-----+-----------------------------------------------------------------
epoch_no          | 942
tx_hash           | 885393d0344ceffc748b7ada131d1ce44613044d8919fb6fb5f15f899a3cb1c9
block_hash        | e86a70060a41ce1b4f5f247bbc98a0ed343d7e25fd7676217cfc434c113cb800
block_index       | 1
block_height      | 3263698
block_time        | 1748048640
treasury_donation | 1000000
-[ RECORD 2 ]-----+-----------------------------------------------------------------
epoch_no          | 942
tx_hash           | 5b46990744aca4cb2fd9b7e047cc3ab8e3b86164bb2554cc47760721b641e01d
block_hash        | c733929c4ffd54149b7fa359a0a9e4100a07a728237a05c3d4c026bd4998bd98
block_index       | 1
block_height      | 3263704
block_time        | 1748048797
treasury_donation | 2000000
-[ RECORD 3 ]-----+-----------------------------------------------------------------
epoch_no          | 942
tx_hash           | 7413d3cdcb2255d5ac543bd3c4b9a32aa15cea2b9d55896ddde037be8dad8015
block_hash        | a51d1a6d9deafe21219173d55287ec1d3c2d402f49af47203e7a176b029c859b
block_index       | 0
block_height      | 3263713
block_time        | 1748048971
treasury_donation | 3000000
```

## Which issue it fixes?
<!--- Link to issue: Closes #issue-number -->
Closes #345

---------

Co-authored-by: RdLrT <[email protected]>

## Description
<!--- Describe your changes -->
Adds total `treasury_donation`, `treasury_withdrawal` and
`reserve_withdrawal` to `/totals`.

## Which issue it fixes?
<!--- Link to issue: Closes #issue-number -->
Closes #347