David Ashpole 0724539e71 Add benchmark for set equality (#7262) ...

Forked from https://github.com/open-telemetry/opentelemetry-go/pull/7175

```
$ go test -timeout 60s -run=xxxxxMatchNothingxxxxx -test.benchtime=10ms -count 6 -cpu 1 -bench=BenchmarkEquals ./...
goos: linux
goarch: amd64
pkg: go.opentelemetry.io/otel/attribute
cpu: Intel(R) Xeon(R) CPU @ 2.20GHz
BenchmarkEquals/Empty         	 1314884	         9.008 ns/op
BenchmarkEquals/Empty         	 1875915	         8.461 ns/op
BenchmarkEquals/Empty         	 1461613	         7.749 ns/op
BenchmarkEquals/Empty         	 1636912	         9.359 ns/op
BenchmarkEquals/Empty         	 1863039	         6.355 ns/op
BenchmarkEquals/Empty         	 1789053	         6.336 ns/op
BenchmarkEquals/1_string_attribute         	  674168	        16.92 ns/op
BenchmarkEquals/1_string_attribute         	  701983	        16.42 ns/op
BenchmarkEquals/1_string_attribute         	  692001	        16.52 ns/op
BenchmarkEquals/1_string_attribute         	  687970	        16.29 ns/op
BenchmarkEquals/1_string_attribute         	  751766	        16.58 ns/op
BenchmarkEquals/1_string_attribute         	  703534	        16.88 ns/op
BenchmarkEquals/10_string_attributes       	   85400	       137.1 ns/op
BenchmarkEquals/10_string_attributes       	   91045	       136.1 ns/op
BenchmarkEquals/10_string_attributes       	   90973	       150.7 ns/op
BenchmarkEquals/10_string_attributes       	   62877	       177.5 ns/op
BenchmarkEquals/10_string_attributes       	   90780	       194.2 ns/op
BenchmarkEquals/10_string_attributes       	   91058	       144.6 ns/op
BenchmarkEquals/1_int_attribute            	  624625	        18.72 ns/op
BenchmarkEquals/1_int_attribute            	  689478	        16.03 ns/op
BenchmarkEquals/1_int_attribute            	  719173	        15.68 ns/op
BenchmarkEquals/1_int_attribute            	  707005	        16.18 ns/op
BenchmarkEquals/1_int_attribute            	  752048	        15.94 ns/op
BenchmarkEquals/1_int_attribute            	  752034	        16.23 ns/op
BenchmarkEquals/10_int_attributes          	   90302	       132.5 ns/op
BenchmarkEquals/10_int_attributes          	   89929	       131.9 ns/op
BenchmarkEquals/10_int_attributes          	   86578	       135.2 ns/op
BenchmarkEquals/10_int_attributes          	   90482	       133.1 ns/op
BenchmarkEquals/10_int_attributes          	   90255	       132.0 ns/op
BenchmarkEquals/10_int_attributes          	   87615	       134.6 ns/op
PASS
ok  	go.opentelemetry.io/otel/attribute	0.578s
PASS
ok  	go.opentelemetry.io/otel/attribute/internal	0.017s
```

---------

Co-authored-by: Flc゛ <four_leaf_clover@foxmail.com>
Co-authored-by: Robert Pająk <pellared@hotmail.com>

2025-08-28 14:13:55 -04:00

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