adding BLOOM/DARK

[leo42]

BLOOM operates a large cluster including the DARK pool.

The operation also serves several stake-pool-as-a-service clients for whom we do not have any solid information

All Submissions:

• [ ] Have you followed the guidelines in our Contributing documentation?
• [ ] Have you verified that there aren't any other open Pull Requests for the same update/change?
• [ ] Does the Pull Request pass all tests?

Description

/* Add a short description of your Pull Request */

Checklist

/* Keep from below the appropriate checklist for your Pull Request and remove the others */

New Ledger Support Submissions:

• What mapping information did you add for the new ledger?
  • [ ] identifiers
  • [ ] addresses
  • [ ] clusters
  • [ ] legal links
• Did you create a new parser?
  • [ ] If yes, did you create a unit test for the new parser?
  • [ ] If no, which parser did you reuse?
    • [ ] DefaultParser
    • [ ] DummyParser
    • [ ] EthereumParser
• Did you create a new mapping?
  • [ ] If yes, did you create a unit test for the new mapping?
  • [ ] If no, which mapping did you reuse? /* mapping name */
    • [ ] DefaultMapping
    • [ ] DummyMapping
    • [ ] EthereumMapping
    • [ ] CardanoMapping
    • [ ] TezosMapping
• [ ] Did you enable the parser for the new ledger in consensus_decentralization/parse.py?
• [ ] Did you enable the mapping for the new ledger in consensus_decentralization/map.py?
• [ ] Did you document support for the new ledger as described in our Contributing documentation?

Update Mapping Support Information Submissions:

• For which ledger do you update the mapping information?
  • [ ] /* ledger name */
• What mapping information do you update?
  • [ ] identifiers
  • [ ] addresses
  • [x] clusters
  • [ ] legal links
• [ ] Did you update the tests (if needed)?

New Metric Support Submissions:

• [ ] Did you put the metric's script under consensus_decentralization/metrics?
• [ ] Did you name the metric's main function of the script compute_{metric name}?
• [ ] Did you import the metric's main function to consensus_decentralization/analyze.py?
• [ ] Did you add the new metric (and possible parameter values) to config.yaml?
• [ ] Did you write unit tests for the new metric?
• [ ] Did you document the new metric in the documentation pages?