feat: support OpenTelemetry SDK 2.0

[sjvans]

scope: w/o considering CALM

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• traces
• metrics
• logs
• host-metrics compatible (no 0.200 yet)?
• instrumentation-runtime-node compatible (no 0.200 yet)?

[sebastien-savalle]

@sjvans : Do you plan to merge it soon ?

[sjvans]

@sjvans : Do you plan to merge it soon ?

no, interoperability with Cloud ALM is still open

[harjyotsital15]

Given SAP’s direction—where xotel-agent-ext-js 2.x aligns with OpenTelemetry 2.x and 1.5.x is only supported with fixes until June 30, 2026—this transition is becoming quite time-critical.

Also, considering SAP Cloud ALM’s observability stack is OTEL-based and version mismatches already introduce compatibility issues, moving to 2.0 is essential to avoid fragmentation across CAP apps.

Is there any update on the timeline or next steps for completing the transition to OTel 2.0? This would really help with planning upcoming upgrades on our side. 🚀

[mrl-sap]

The initial description explicitely mentioned "scope: w/o considering CALM". So I would be interested in a timeline as well.
Can you give a rough estimate?