Tracking: Block Explorer support

[mpguerra]

Motivation

This is the tracking issue to outline the work necessary in order for zebra to support block explorers.

Zcash Block explorers

• Blockchair
• Tokenview
• Bitquery
• Blockexplorer.one
• Zcash Block Explorer github

Specification

• [ ] #8453
• [ ] #8456

RPC Methods

Using the Zcash Block Explorer from above as an example, these are the following RPC methods that would need to be implemented in zebra:

• [ ] #8436
• [ ] #8437
• [ ] #8438
• [ ] #8439
• [ ] #8440
• [ ] #8441
• [ ] #8442
• [ ] #8443
• [ ] #8444
• [ ] #8445

The following RPC methods should also be updated to support all of the required query and result fields:

• [ ] #8446
• [ ] #8447
• [ ] #8448
• [ ] #8449
• [ ] #8450
• [ ] #8451
• [ ] #8452