feat: add ws keepalive support

[izayl]

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PR-Codex overview

The focus of this PR is to add a keepAlive property to the webSocket transport for sending ping messages and improve reconnect behavior.

Detailed summary

• Added keepAlive property to webSocket transport
• Implemented sending keep-alive ping messages
• Improved reconnect behavior on socket closure

The following files were skipped due to too many changes: src/utils/rpc/socket.ts

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[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 874c5a298028712a0a2de673a9b3c36b5838591c

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

This PR includes changesets to release 1 package

| Name | Type | | ---- | ----- | | viem | Patch |

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