feat: rename CHAIN_NAMESPACE.Bitcoin -> CHAIN_NAMESPACE.Utxo

[gomesalexandre]

Description

Renames the usages of the Bitcoin CHAIN_NAMESPACE to be Utxo following https://github.com/shapeshift/lib/pull/1006

⚠️ Merge as a stack from Graphite since this requires CAIP version bump and will break unless all CHAIN_NAMESPACE changes are updated at once

Notice

• [x] Have you followed the guidelines in our Contributing guide?
• [x] Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Pull Request Type

• [ ] :bug: Bug fix (Non-breaking Change: Fixes an issue)
• [ ] :hammer_and_wrench: Chore (Non-breaking Change: Doc updates, pkg upgrades, typos, etc..)
• [x] :nail_care: New Feature (Breaking/Non-breaking Change)

Issue (if applicable)

N/A - relates to mutli-account M2 https://github.com/shapeshift/web/milestone/31

Risk

None

Testing

Engineering

• CI is happy

Operations

• None, as long as this is PR has a green tick, we are good here

Screenshots (if applicable)

[gomesalexandre]

Current dependencies on/for this PR:

• develop
  • PR #2635 👈
    • PR #2636
      • PR #2637

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