Benchmark with Develocity plugin

[alllex]

Similar to #613, but for benchmarks

Expected behavior

User should be able to provide an option to apply a DV plugin of a given version to the benchmark (option name not final):

gradle-profiler --benchmarks --with-develocity 4.2.2

This will apply the DV plugin via an init script, if the build doesn't already apply the plugin.

It would also be useful to provide an additional custom value / tag for the build scan, so those can be distinguished from regular build scans, if necessary. We do a similar thing for profiling already:

gradle-profiler/src/main/java/org/gradle/profiler/buildscan/DevelocityInitScript.java

Lines 29 to 31 in d7a4c1a

	" publishing {\n" +
	" onlyIf { System.getProperty('org.gradle.profiler.phase') == 'MEASURE' }\n" +
	" }\n" +