feat: Add Azure Functions instrumentation

[ejizba]

Which problem is this PR solving?

The Azure Functions team plans to announce preview support soon for Open Telemetry across several languages (see this GitHub issue for full details). I work specifically on the Node.js experience, including the @azure/functions npm package here. A lot of the implementation for OTel was done in our shared host component which is written in .NET (PR here).

Fixes Azure/azure-functions-nodejs-library#245

Short description of the changes

Added new npm package that can do the following for Azure Functions users:

1. Correlate the traces generated from the user's node.js code to the trace context provided by our shared host component
2. Send logs directly from Node.js instead of our shared host component (this results in better correlation, more flexibility for the user, etc.)

Added my coworker @castrodd and manager @AnatoliB as additional owners.

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: ejizba / name: Eric Jizba (839a2ea, d5d2604, bcf778a, c4e0a0c, d23b87c, 552f0c2, e223dc5, 35e7c14, f91034c, b5a4148, 25e8119)
• ✅ login: hectorhdzg / name: Hector Hernandez (d81d1be)

[hectorhdzg]

LGTM

[ejizba]

Closing related to #2259

[gunzip]

where can we follow progress about this now that is closed? thanks!

[ejizba]

Azure/azure-functions-nodejs-library#245