feat: support eth_fillTransaction

[jxom]

• Adds a fillTransaction action that internally uses eth_fillTransaction.
  • Execution Spec
• Adds support for fillTransaction in prepareTransactionRequest, to reduce RPC network calls required to prepare a transaction from 3-4, to 1.

[changeset-bot]

🦋 Changeset detected

Latest commit: 8f7ca40

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
viem	Minor

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[pkg-pr-new]

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commit: 8f7ca40

[codecov]

Codecov Report

❌ Patch coverage is 89.74359% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 94.43%. Comparing base (00325b0) to head (8f7ca40).
⚠️ Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
src/actions/public/fillTransaction.ts	87.50%	3 Missing and 4 partials ⚠️
src/clients/decorators/wallet.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4098      +/-   ##
==========================================
- Coverage   94.47%   94.43%   -0.04%     
==========================================
  Files        1079     1082       +3     
  Lines        7856     7926      +70     
  Branches     2505     2532      +27     
==========================================
+ Hits         7422     7485      +63     
- Misses        151      155       +4     
- Partials      283      286       +3     

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