feat(node-core): Add node-core package

[andreiborza]

This PR creates a new node-core package

• that comes with no OpenTelemetry auto-instrumentations out of the box
• adds only necessary OpenTelemetry dependencies and widens their range to accept both v1 and v2 majors
• adds node-core integration tests
• adds an e2e test app with OpenTelemetry v1 dependencies
• adds an e2e test app with OpenTelemetry v2 dependencies

The package is still experimental and should not be used yet.

Closes: #15213