feat: Set HTTP request span name as {method} {route}

[spencewenski]

The OTEL semantic conventions specify that an HTTP request span should be named {method} {target} if the method and target (route) are available. The tracing-opentelemtry crate allows setting a dynamic span name using the otel.name field, which allows us to use the method/route in the span name.

This PR also sets the http span kind as SERVER

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.

Project coverage is 58.83%. Comparing base (9eddc1b) to head (b0b71c9).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/service/http/middleware/tracing/mod.rs	0.00%	5 Missing ⚠️

Files with missing lines	Coverage Δ
src/service/http/middleware/tracing/mod.rs	38.09% <0.00%> (-0.93%)	⬇️

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