fix(zpages): use tonic based generated files.

[TommyCpp]

related to open-telemetry/opentelemetry-rust-contrib#4

Changes

The reason zpages cannot compile after #1202 is prost backed grpcio compiler no longer allow us to add serde macros onto the types. Thus, instead of using grpcio types, use tonic types in zpages fixes it.

Merge requirement checklist

• [x CONTRIBUTING guidelines followed
• Unit tests added/updated (if applicable)
• Appropriate CHANGELOG.md files updated for non-trivial, user-facing changes

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +0.1% 🎉

Comparison is base (2ba8f9f) 49.1% compared to head (f40a762) 49.3%.
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##            main   open-telemetry/opentelemetry-rust#1214     +/-   ##
=======================================
+ Coverage   49.1%   49.3%   +0.1%     
=======================================
  Files        173     174      +1     
  Lines      20937   21042    +105     
=======================================
+ Hits       10301   10380     +79     
- Misses     10636   10662     +26     

Files Changed	Coverage Δ
opentelemetry-proto/src/transform/tracez.rs	0.0% <ø> (ø)
opentelemetry-sdk/src/runtime.rs	92.1% <ø> (ø)
opentelemetry-zpages/src/trace/aggregator.rs	80.0% <ø> (+0.2%)	⬆️
opentelemetry-zpages/src/trace/mod.rs	0.0% <ø> (ø)

... and 3 files with indirect coverage changes

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[shaun-cox]

@TommyCpp, I think if you rebase or merge, the CI/docs step will pass. (I'm eager to see this merged as soon as possible so we can merge #1199). Thanks.

[TommyCpp]

Waiting for CI to clear and I will merge