Merge Timeseries schema

[barboraplasovska]

What and why ?

Adds a new timeseries RUM event type to the schema, with two concrete event schemas: timeseries-cpu-schema.json and timeseries-memory-schema.json, registered in rum-events-mobile-schema.json.

This backs the new experimental mobile RUM Timeseries feature: periodic CPU and memory samples collected during a session, batched and flushed as their own event type.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Add timeseries to the aggregate RUM schema

This block only registers the new event in the mobile schema, but schemas/rum-events-schema.json remains unchanged while scripts/generate.mjs:15 uses that aggregate schema to generate the exported RumEvent types. When consumers validate or generate from the aggregate schema, these mobile timeseries payloads are still rejected and omitted from the package types even though they are now valid mobile RUM events; add the same timeseries branch there and regenerate the definitions.

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