This copes the `go.opentelemetry.io/auto/sdk` package into the
`go.opentelemetry.io/otel/trace` package. This is done to avoid package
import cycles and still provide an auto-instrumentable SDK (see
https://github.com/open-telemetry/opentelemetry-go-instrumentation/issues/974).
## Overview of changes
The code copied is updated with the following changes. The over-all goal
is to ensure none of this is exported and follows the `auto/sdk` as
close as possible to help maintenance.
### `trace/auto.go`
Consolidation of the following into a single file:
-
aea085dd2a/sdk/tracer_provider.go
-
aea085dd2a/sdk/tracer.go
-
aea085dd2a/sdk/span.go
-
aea085dd2a/sdk/limit.go
Has the following changes:
- `func TracerProvider()` renamed to `newAutoTracerProvider`
- `type tracerProvider struct` renamed to `autoTracerProvider`
- `type tracer struct` renamed to `autoTracer`
- `type span struct` renamed to `autoSpan`
- Lint issues addressed based on this repositories configuration (these
changes are being back-ported upstream)
### `trace/auto_test.go`
Consolidation of the following into a single file:
-
aea085dd2a/sdk/tracer_provider_test.go
-
aea085dd2a/sdk/tracer_test.go
-
aea085dd2a/sdk/span_test.go
-
aea085dd2a/sdk/limit_test.go
Has the following changes:
- Renames in `trace/auto.go` are applied here
- Lint issues addressed based on this repositories configuration (these
changes are being back-ported upstream)
### `trace/internal/telemetry`
Copied from
aea085dd2a/sdk/internal/telemetry
- Pacakge vanity URLs added
- Lint issues addressed based on this repositories configuration (these
changes are being back-ported upstream)
- Use of the package name has been updated
#### `trace/internal/telemetry/test`
Copied from
aea085dd2a/sdk/internal/telemetry/test
- Module name updated
- Documentation updated with new package name
- Testing values updated with new package name
---------
Co-authored-by: Ron Federman <73110295+RonFed@users.noreply.github.com>
