feat: add event support to dynamic parsers and codecs

[daog1]

Summary

This PR adds event support to @codama/dynamic-parsers and the required codec support in @codama/dynamic-codecs.

Specifically, it:

• adds EventNode support to getNodeCodec
• adds identifyEventData and parseEventData
• extends generic identifyData / parseData to support eventNode
• adds parseDataByName to decode accounts, events, or instructions by name
• documents the new dynamic-parsers APIs
• adds tests for struct-based and tuple-based event payloads

Details

@codama/dynamic-codecs

Added EventNode to EncodableNodes and taught getNodeCodecVisitor to delegate event decoding to event.data, matching the existing account/instruction behavior.

@codama/dynamic-parsers

Added:

• identifyEventData
• parseEventData
• parseDataByName

Also updated event identification so it no longer assumes event payloads are struct-only. This is important because EventNode.data is a general TypeNode, and Anchor event payloads may be tuple-based with hidden discriminator prefixes.

To support that, discriminator matching was relaxed so:

• constant discriminators work with any event payload type
• size discriminators work with any event payload type
• field discriminators still require struct payloads

Tests

Added and updated tests to cover:

• event codec delegation in dynamic-codecs
• event identification in dynamic-parsers
• event parsing in dynamic-parsers
• tuple event payloads with constant discriminators
• parsing by name for accounts, events, and instructions

Validation

Ran:

• pnpm --filter @codama/dynamic-codecs test:types
• pnpm --filter @codama/dynamic-codecs build
• pnpm --filter @codama/dynamic-codecs test:unit
• pnpm --filter @codama/dynamic-parsers test:types
• pnpm --filter @codama/dynamic-parsers build
• pnpm --filter @codama/dynamic-parsers test:unit

[changeset-bot]

🦋 Changeset detected

Latest commit: 6ac4e23

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

This PR includes changesets to release 2 packages

Name	Type
@codama/dynamic-codecs	Minor
@codama/dynamic-parsers	Minor

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Click here if you're a maintainer who wants to add another changeset to this PR

[lorisleiva]

I'd just like to challenge the usefulness of parseDataByName but the rest is good. Don't forget to add a changeset as well.