[pdata] Rename ptrace.SpanStatus to ptrace.Status

[dmitryax]

As a new rule we want to rename all the structs for proto messages defined at the package level to not have the owner prefix in its name. Protobuf for message for trace.Status is defined at the top level https://github.com/open-telemetry/opentelemetry-proto/blob/main/opentelemetry/proto/trace/v1/trace.proto#L260. It also brings consistency with existing trace.StatusCode type.

Updates #6257

[codecov]

Codecov Report

Base: 92.30% // Head: 92.30% // No change to project coverage 👍

Coverage data is based on head (040bd7a) compared to base (8a346b0).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6258   +/-   ##
=======================================
  Coverage   92.30%   92.30%           
=======================================
  Files         219      219           
  Lines       13455    13455           
=======================================
  Hits        12419    12419           
  Misses        806      806           
  Partials      230      230           

Impacted Files	Coverage Δ
pdata/ptrace/traces.go	92.00% <ø> (ø)
pdata/internal/generated_wrapper_traces.go	100.00% <100.00%> (ø)
pdata/ptrace/generated_traces.go	97.00% <100.00%> (ø)

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