feat: add support for setting a custom benchmark name #335

Job	Run time
cmake-build (ubuntu-latest, off)	58s
cmake-build (ubuntu-latest, walltime)	58s
cmake-build (windows-latest, off)	1m 50s
tests	20s
cmake-build (windows-latest, walltime)	3m 13s
bazel-integration-tests (instrumentation, ubuntu-latest)	58s
bazel-integration-tests (off, ubuntu-latest)	23s
lint	14s
bazel-integration-tests (walltime, codspeed-macro)	3m 17s
bazel-build (ubuntu-latest, off, 8.4.2)	43s
bazel-build (windows-latest, off, 7.6.2)	1m 22s
bazel-build (ubuntu-latest, walltime, 7.6.2)	35s
cmake-integration-tests (walltime, codspeed-macro)	3m 17s
bazel-build (windows-latest, off, 9.0.0-pre.20250921.2)	1m 35s
cmake-integration-tests (instrumentation, ubuntu-latest)	1m 10s
bazel-build (windows-latest, walltime, 9.0.0-pre.20250921.2)	1m 39s
bazel-build (ubuntu-latest, off, 7.6.2)	36s
bazel-build (windows-latest, walltime, 8.4.2)	3m 30s
bazel-build (windows-latest, off, 8.4.2)	1m 41s
bazel-build (ubuntu-latest, walltime, 8.4.2)	30s
bazel-build (windows-latest, walltime, 7.6.2)	1m 0s
bazel-build (ubuntu-latest, walltime, 9.0.0-pre.20250921.2)	1m 1s
cmake-integration-tests (off, ubuntu-latest)	58s
bazel-build (ubuntu-latest, off, 9.0.0-pre.20250921.2)	1m 33s
	33m 21s

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