Getting Data: add Node.js SDK query examples

[Freddyminu]

Summary

Expands getting-data.md with a full Node.js SDK section covering filters, date ranges, pagination, all query types, aggregations, and common pitfalls. Adds a link from the Node.js SDK page to the expanded doc.

Why

The existing page was REST-only with no SDK examples. Power users were hitting support for things like aggregate queries, conditional filters, and pagination patterns that should be self-serve.

There was some back and forth on where to put this content. First pass was a standalone devices/advanced-data-queries.md page, then it moved to analysis/sdk/ to sit alongside the Node.js and Python SDK docs. Both felt off — the new page was a fourth item next to the two SDK reference pages and didn't belong there, and a separate device page duplicated context that already lives in getting-data.md. Merging into the existing page keeps device data queries in one place.

Test plan

• Dev server renders getting-data.md with both REST API and Node.js SDK sections visible
• All internal links resolve (device token, profile token, grouping variables, Access Management, Analysis)
• Node.js SDK page link to Getting Data navigates correctly

Risk (CIA)

Likelihood: ⚪ None | Impact: ⚪ None | Exposure: ⚪ None
Docs-only change, no behavior or API surface affected.

Closes #87

[Freddyminu]

@vitorfdl Not 100% if the best option was to add it to the existing getting data page, but I decided to do that instead of grouping it with the TagoIO SDK documentation or making a separate page just for it.