feat: add config parameters for burn block start

[obycode]

Description

Added configuration parameters to customize the burn block at which to start processing Stacks blocks, when running on testnet or regtest.

[burnchain]
first_burn_block_height = 2582526
first_burn_block_timestamp = 1710780828
first_burn_block_hash = "000000000000001a17c68d43cb577d62074b63a09805e4a07e829ee717507f66"

Applicable issues

• N/A

Additional info (benefits, drawbacks, caveats)

Checklist

• Test coverage for new or modified code paths
• Changelog is updated
• Required documentation changes (e.g., docs/rpc/openapi.yaml and rpc-endpoints.md for v2 endpoints, event-dispatcher.md for new events)
• New clarity functions have corresponding PR in clarity-benchmarking repo
• New integration test(s) added to bitcoin-tests.yml

[kantai]

LGTM!

[codecov]

Codecov Report

Attention: Patch coverage is 61.68224% with 82 lines in your changes are missing coverage. Please review.

Project coverage is 66.75%. Comparing base (25311e4) to head (117d8be).
Report is 4 commits behind head on next.

Additional details and impacted files

@@             Coverage Diff             @@
##             next    #4556       +/-   ##
===========================================
- Coverage   84.37%   66.75%   -17.62%     
===========================================
  Files         471      471               
  Lines      337762   337942      +180     
  Branches      317      317               
===========================================
- Hits       284973   225609    -59364     
- Misses      52781   112325    +59544     
  Partials        8        8               

Files	Coverage Δ
stackslib/src/net/api/tests/mod.rs	97.52% <100.00%> (+0.01%)	⬆️
stackslib/src/net/mod.rs	73.24% <100.00%> (-1.37%)	⬇️
testnet/stacks-node/src/tenure.rs	100.00% <100.00%> (ø)
stackslib/src/chainstate/stacks/miner.rs	78.56% <91.66%> (-2.12%)	⬇️
...-node/src/burnchains/bitcoin_regtest_controller.rs	77.70% <92.30%> (-10.71%)	⬇️
testnet/stacks-node/src/nakamoto_node/miner.rs	83.46% <0.00%> (+0.33%)	⬆️
testnet/stacks-node/src/neon_node.rs	82.15% <66.66%> (-0.82%)	⬇️
...tackslib/src/chainstate/stacks/boot/pox_2_tests.rs	59.21% <0.00%> (-37.23%)	⬇️
stackslib/src/chainstate/stacks/db/blocks.rs	74.15% <71.42%> (-15.87%)	⬇️
stackslib/src/chainstate/stacks/db/unconfirmed.rs	51.50% <33.33%> (-42.64%)	⬇️
... and 8 more

... and 272 files with indirect coverage changes

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 25311e4...117d8be. Read the comment docs.

[obycode]

These failing tests were fixed in #4578.