Add DsnParser + Otlp/HttpEndpointResolver and remove dependency on nyholm/dsn

[tidal]

This PR removes the dependency on the nyholm/dsn package by introducing dedicated DsnParser + Otlp/HttpEndpointResolver components.
The DSN we use in the Trace/ExporterFactory (and probably other factories in the future) uses a protocol=type+scheme pattern to identify different exporters. This is not supported by nyholm/dsn, so there had to be custom logic in the first place.
The other place where the package was used was resolving the OTLP HTTP endpoints according to the spec. This logic has been used into a dedicated class, which can be used for exporters of other signals in the future.

• Adds Dsn, Dsn/Parser and Dsn/Factory.
• Adds Otlp/HttpEndpointResolver
• Removes dependency on nyhol/dsn

(Note: There were some outdated assumptions in the OTLPHttpExporterTest which dated back to before the introduction of signal specific Env Vars. These have just been removed for now. The OTLExporter tests need some rework anyway, which will be provided in a future PR.)

related:

• Create unified HTTP Client (Wrapper) #508
• Exporter factory, factory methods and creation could use some rework/cleanup #451

[codecov]

Codecov Report

Merging #767 (e05f9ae) into main (7f2e974) will increase coverage by 0.86%.
The diff coverage is 97.18%.

@@             Coverage Diff              @@
##               main     #767      +/-   ##
============================================
+ Coverage     78.66%   79.53%   +0.86%     
- Complexity     1348     1409      +61     
============================================
  Files           156      160       +4     
  Lines          3314     3479     +165     
============================================
+ Hits           2607     2767     +160     
- Misses          707      712       +5     

Flag	Coverage Δ
7.4	79.53% <97.16%> (+0.86%)	⬆️
8.0	79.60% <97.16%> (+0.86%)	⬆️
8.1	79.60% <97.16%> (+0.86%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/SDK/Common/Dsn/Dsn.php	90.90% <90.90%> (ø)
src/Contrib/OtlpHttp/Exporter.php	94.00% <100.00%> (+1.27%)	⬆️
src/SDK/Common/Dsn/Factory.php	100.00% <100.00%> (ø)
src/SDK/Common/Dsn/Parser.php	100.00% <100.00%> (ø)
src/SDK/Common/Otlp/HttpEndpointResolver.php	100.00% <100.00%> (ø)
src/SDK/Trace/ExporterFactory.php	100.00% <100.00%> (ø)

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[tidal]

Phan error should be resolved, when #768 is merged.

[Nevay]

enqueue/dsn supports scheme extensions / their use case is very similar to ours. I think we should use ConnectionFactoryFactory as orientation for our implementation.

[brettmc]

looks good to me, pending Nevay's comment about enqueue/dsn ?

[tidal]

enqueue/dsn supports scheme extensions / their use case is very similar to ours. I think we should use ConnectionFactoryFactory as orientation for our implementation.

I guess you mean the ExporterFactory. I can look into that.