feat: Import miner changes from stacks-blockchain/3337 into subnets

[gregorycoppola]

Description

This PR imports the main chain miner improvements from stacks-network/stacks-core#3337 into subnets. (See also stacks-network/stacks-core#3313)

The idea is:

• loop through each transaction in the database
  • known fee rate transactions are iterated in descending order of fee rate
  • unknown fee rate transactions are selected in random order
• for each check the nonce, potentially hitting a nonce cache
  • if the nonce matches run it
  • if the nonce is in the future cache it
  • if the nonce is in the past, discard it

Applicable issues

• mostly concludes Stress-testing, performance, and miner optimizations for subnets #130

Additional info (benefits, drawbacks, caveats)

Was approved in #194

Checklist

• Test coverage for new or modified code paths
• Changelog is updated

[codecov-commenter]

Codecov Report

Merging #203 (156a3ba) into master (81f9fe5) will not change coverage.
The diff coverage is n/a.

📣 This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

@@           Coverage Diff           @@
##           master     #203   +/-   ##
=======================================
  Coverage   91.19%   91.19%           
=======================================
  Files           6        6           
  Lines         284      284           
=======================================
  Hits          259      259           
  Misses         25       25           

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[kantai]

LGTM!

[gregorycoppola]

Thanks!