The percentage lag trend is at the moment only available for the NumSensors
load type, because for NumNestedGroups it makes no sense.

Specific slo checker should be defined with a propertie map to be more generic.
Further add a lag trend percent slo, which use a percentage of the defined load
to compute the allowed threshold.

Enhance Code Quality

Closes #209

See merge request !168

Merge branch 'enhance-code-quality' of git.se.informatik.uni-kiel.de:wetzel/spesb into enhance-code-quality

Merge branch 'theodolite-kotlin' of git.se.informatik.uni-kiel.de:she/theodolite into enhance-code-quality

Re-implementation of Theodolite with Kotlin/Quarkus

Closes #148, #226, and #220

See merge request !159

Adjust Benchmark Definitions for Operator

See merge request !152

Add documentation for the crd benchmark and execution

See merge request !169