refactor: Move stacks-codec into separate crate

[jbencin-stacks]

Description

In Clarinet currently we use a copy/pasted version of stacks-codec. This is not a good way to share code, and I think the ideal way to handle it would be to publish stacks-codec on crates.io

To do this, we need to refactor stacks-codec into it's own crate, and make sure it doesn't depend on any other parts of stacks-core. This PR simply moves stacks-codec out of stacks-common and into it's own crate, while re-exporting stacks-codec from stacks-common to avoid further changes in the code that currently uses it

Applicable issues

• Fixes Import stacks-codec from stacks-core stx-labs/clarinet#2226

Additional info (benefits, drawbacks, caveats)

There may be other Stacks projects in Rust which can benefit from this

Checklist

• Test coverage for new or modified code paths
• For new Clarity features or consensus changes, add property tests (see docs/property-testing.md)
• Changelog is updated
• Required documentation changes (e.g., rpc/openapi.yaml for RPC endpoints, event-dispatcher.md for new events)
• New clarity functions have corresponding PR in clarity-benchmarking repo

[CLAassistant]

All committers have signed the CLA.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
7 out of 8 committers have signed the CLA.

✅ simone-stacks
✅ dhaney-stacks
✅ jacinta-stacks
✅ brice-stacks
✅ benjamin-stacks
✅ wileyj
✅ aaronb-stacks
❌ jbencin-stacks
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[jcnelson]

LGTM as long as CI passes

[brice-stacks]

lgtm

[coveralls]

Coverage Report for CI Build 24209411066

Coverage decreased (-0.05%) to 85.666%

Details

• Coverage decreased (-0.05%) from the base build.
• Patch coverage: 20 uncovered changes across 1 file (114 of 134 lines covered, 85.07%).
• 1909 coverage regressions across 65 files.

Uncovered Changes

File	Changed	Covered	%
stacks-codec/src/lib.rs	126	106	84.13%

Coverage Regressions

1909 previously-covered lines in 65 files lost coverage.

Top 10 Files by Coverage Loss	Lines Losing Coverage	Coverage
stackslib/src/net/inv/epoch2x.rs	221	79.49%
stackslib/src/net/chat.rs	199	93.0%
stacks-node/src/nakamoto_node/miner.rs	130	87.39%
stackslib/src/net/api/postblock_proposal.rs	108	82.02%
stackslib/src/clarity_vm/database/marf.rs	99	60.67%
clarity/src/vm/contexts.rs	75	92.36%
clarity/src/vm/functions/database.rs	75	92.36%
stackslib/src/net/codec.rs	69	91.63%
stackslib/src/clarity_vm/database/ephemeral.rs	61	56.82%
stackslib/src/net/p2p.rs	60	75.18%

---

Coverage Stats

Relevant Lines:	217886
Covered Lines:	186654
Line Coverage:	85.67%
Coverage Strength:	17168241.91 hits per line

---

💛 - Coveralls

[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.