chore: add coverage report

[joepegler]

PR-Codex overview

This PR enhances test coverage thresholds, updates reporters, and adds a new workflow for coverage reports. It also improves branch and statement coverage in various files.

Detailed summary

• Increased test coverage thresholds
• Updated test reporters
• Added a workflow for coverage reports
• Improved branch and statement coverage in multiple files

The following files were skipped due to too many changes: coverage/coverage-final.json

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[github-actions]

size-limit report 📦

Path	Size
core (esm)	8.35 KB (0%)
core (cjs)	17.1 KB (0%)
smartAccount (tree-shaking)	3.13 KB (0%)
bundler (tree-shaking)	110 B (0%)
paymaster (tree-shaking)	92 B (0%)

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🟢	Lines	86.07% (🎯 80%)	1366 / 1587
🟢	Statements	86.07% (🎯 80%)	1366 / 1587
🟢	Functions	71.42% (🎯 70%)	35 / 49
🟢	Branches	68.18% (🎯 60%)	45 / 66

File Coverage

File	Stmts	% Branch	% Funcs	% Lines	Uncovered Lines
Changed Files
src/client/createSmartAccountClient.ts	100%	100%	100%	100%

Generated in workflow #98