STR-950 envelope changes

[bewakes]

This PR primarily introduces the following changes:

1. Changes the OP_IF..OP_ENDIF envelope structure. It still retains version and size of the payload.
2. Support of multiple L1 payloads bundled as envelopes in a single reveal transaction.
3. Corresponding db changes. Previously, it had 1-1 mapping between payload intent and L1 transaction, now it is many-to-one.
4. Add a bundler task in btcio such that creates BundledPayloadEntry and stores in db, which is ultimately published to bitcoin. Currently, it just does 1-1 mapping like it was before, but the bundling logic can be advanced in future.
5. Renames sequencer db to writer db, because actually it contains data related to payloads and bundles.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature/Enhancement (non-breaking change which adds functionality or enhances an existing one)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Refactor
• New or updated tests
• Dependency Update

Notes to Reviewers

Checklist

• I have performed a self-review of my code.
• I have commented my code where necessary.
• I have updated the documentation if needed.
• My changes do not introduce new warnings.
• I have added tests that prove my changes are effective or that my feature works.
• New and existing tests pass with my changes.

Related Issues

[github-actions]

Commit: c83493b

SP1 Performance Test Results

program	cycles	success
BTC_BLOCKSPACE	30,357,459	✅
EL_BLOCK	98,534	✅
CL_BLOCK	57,370	✅
L1_BATCH	30,387,400	✅
L2_BATCH	5,473	✅
CHECKPOINT	15,895	✅

[codecov]

Codecov Report

Attention: Patch coverage is 63.07054% with 178 lines in your changes missing coverage. Please review.

Project coverage is 55.73%. Comparing base (0db65b9) to head (d7dc0a9).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/btcio/src/writer/bundler.rs	0.00%	63 Missing ⚠️
crates/btcio/src/writer/task.rs	30.68%	61 Missing ⚠️
crates/rocksdb-store/src/writer/db.rs	87.05%	18 Missing ⚠️
crates/db/src/types.rs	22.72%	17 Missing ⚠️
bin/strata-client/src/main.rs	0.00%	5 Missing ⚠️
crates/l1tx/src/filter.rs	95.52%	3 Missing ⚠️
crates/l1tx/src/utils.rs	40.00%	3 Missing ⚠️
crates/rocksdb-store/src/lib.rs	0.00%	3 Missing ⚠️
crates/btcio/src/reader/query.rs	0.00%	2 Missing ⚠️
crates/l1tx/src/envelope/parser.rs	95.65%	2 Missing ⚠️
... and 1 more

@@            Coverage Diff             @@
##             main     #590      +/-   ##
==========================================
- Coverage   55.97%   55.73%   -0.25%     
==========================================
  Files         315      315              
  Lines       33428    33496      +68     
==========================================
- Hits        18712    18668      -44     
- Misses      14716    14828     +112     

Files with missing lines	Coverage Δ
crates/btcio/src/test_utils.rs	56.09% <100.00%> (-0.18%)	⬇️
crates/btcio/src/writer/builder.rs	98.03% <100.00%> (-0.01%)	⬇️
crates/btcio/src/writer/signer.rs	100.00% <100.00%> (ø)
crates/btcio/src/writer/test_utils.rs	100.00% <100.00%> (ø)
crates/config/src/btcio.rs	100.00% <100.00%> (ø)
crates/config/src/config.rs	95.74% <100.00%> (+0.09%)	⬆️
crates/db/src/traits.rs	0.00% <ø> (ø)
crates/l1tx/src/envelope/builder.rs	100.00% <100.00%> (+20.00%)	⬆️
crates/primitives/src/l1/payload.rs	24.65% <ø> (+8.21%)	⬆️
crates/proof-impl/btc-blockspace/src/filter.rs	50.00% <100.00%> (ø)
... and 11 more

... and 5 files with indirect coverage changes

[bewakes]

@delbonis, As discussed in Core sync meeting, I've removed the version from envelope. This should be good to merge now.

[delbonis]

This is good for now.

[storopoli]

ACK d7dc0a9