feat: Add JQ Document Transformer component

[eugeis]

What type of PR is this?

feat: Add JQ Document Transformer component

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(Optional) More detailed description for this PR(en: English).

en: This PR adds a new document transformer component that leverages gojq (Go implementation of jq) to manipulate and transform documents in powerful ways. The transformer supports:

1. Individual document transformations using jq expressions
2. Join aggregation to combine multiple source documents into target documents
3. Hierarchical aggregation to build documents based on hierarchical levels
4. Custom function transforms to apply registered Go functions to documents

This component provides a flexible way to transform document content and metadata with the familiar jq syntax, making it easy to implement complex document processing pipelines in Eino.

[eugeis]

Hello,
do I need to change something that the PR can be merged?

[mrh997]

@eugeis Thank you for your PR. We will review it as soon as possible.