Allow both manual and automatic randomization of agents ordering

[Senui]

By default, the random reordering happens at the end of every iterations (during the teardown operation), but with this PR this can be turned off by initializing the auto_randomize_ variable of the RandomizedRm class with false. To manually trigger the random reordering of agents, you can call the RandomizedRm::RandomizeAgentsOrder function.

[sonarqubecloud[bot]]

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[TobiasDuswald]

ping @LukasBreitwieser

[TobiasDuswald]

@Senui is this done and still relevant? :)