Add Luqum

[sarang-pratham]

New Resource: Luqum

This helps devs to parse Lucene query expressions and converting them into structured Elasticsearch DSL queries.

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@marcelscruz

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Summary by cubic

Added Luqum to the resources list to help developers parse Lucene queries and convert them into Elasticsearch DSL. Included categories and keywords for better discovery and organization.

^{Written for commit 77f96a0. Summary will update automatically on new commits.}

[github-actions]

New resource link: https://github.com/jurismarches/luqum

[cubic-dev-ai]

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