Enhanced validator details

[pk910]

This PR adds a tab control to the validator details page, which lazy loads additional validator details on request:

Recent Attestations:

Deposits:

Withdrawal Requests: (only if electra is activated)

Consolidation Requests: (only if electra is activated)

[Giulio2002]

[pk910]

This PR includes several changes to make the new validator details structurally possible.
The biggest part is the new validator cache, which keeps track of the validator set and recent validator activity.

Testing instructions:
use this .hack/devnet/custom-kurtosis.devnet.config.yaml to get some deposits, withdrawal & consolidation requests

participants_matrix:
  el:
    - el_type: geth
      el_image: ethpandaops/geth:lightclient-prague-devnet-4-37035c5
    - el_type: reth
      el_image: ethpandaops/reth:onbjerg-devnet-4-8a40d5c
  cl:
    - cl_type: lighthouse
      cl_image: ethpandaops/lighthouse:pawan-electra-alpha7-0dd215c
    - cl_type: prysm
      cl_image: ethpandaops/prysm-beacon-chain:develop-4aa5410
      vc_image: ethpandaops/prysm-validator:develop-4aa5410
network_params:
  electra_fork_epoch: 1
  min_validator_withdrawability_delay: 1
  shard_committee_period: 1
  churn_limit_quotient: 16
  seconds_per_slot: 6
additional_services:
  - dora
  - assertoor
snooper_enabled: true
assertoor_params:
  image: "ethpandaops/assertoor:electra-support-456ffe4"
  run_stability_check: false
  run_block_proposal_check: false
  tests:
    - { file: "https://raw.githubusercontent.com/ethpandaops/assertoor/refs/heads/electra-support/playbooks/pectra-dev/kurtosis/all.yaml" }