refactor(voyager): rename consensus modules to finality modules (#4597)

## Which issue does this PR close?
closes #4374

## Overview
This PR renames the `voyager/modules/consensus` directory to finality
and updates all related package names and references to better reflect
their actual functionality.

## Why
As identified in issue #4374, the current "consensus" naming is a legacy
artifact from an earlier design. These modules now only provide
information about finality rather than handling the full consensus
process. This renaming improves code clarity and removes potential
confusion for developers.

## Implementation Details
- Renamed directory: `voyager/modules/consensus` → finality
- Updated package names in all module Cargo.toml files:
  - `voyager-consensus-module-X` → `voyager-finality-module-X`
- Updated all references to these modules throughout the codebase
- Updated trait names and related implementations where applicable

## Modules Affected
- arbitrum
- berachain
- bob
- cometbls
- ethereum
- movement
- tendermint
- trusted-evm

Author: benluelo

Cargo.lock

@@ -158,14 +158,14 @@ members = [
   "voyager/modules/client-bootstrap/state-lens/ics23-smt",
   "voyager/modules/client-bootstrap/state-lens/ics23-ics23",
 
-  "voyager/modules/consensus/bob",
-  "voyager/modules/consensus/arbitrum",
-  "voyager/modules/consensus/berachain",
-  "voyager/modules/consensus/cometbls",
-  "voyager/modules/consensus/ethereum",
-  "voyager/modules/consensus/movement",
-  "voyager/modules/consensus/tendermint",
-  "voyager/modules/consensus/trusted-evm",
+  "voyager/modules/finality/bob",
+  "voyager/modules/finality/arbitrum",
+  "voyager/modules/finality/berachain",
+  "voyager/modules/finality/cometbls",
+  "voyager/modules/finality/ethereum",
+  "voyager/modules/finality/movement",
+  "voyager/modules/finality/tendermint",
+  "voyager/modules/finality/trusted-evm",
 
   "voyager/plugins/client-update/bob",
   "voyager/plugins/client-update/arbitrum",