feat(psim)!: change a setting parameter type from bool to string

Description

This PR changes a configuration variable from a bool type to a string type to allow more flexibility in configuring the localization module to be activated in psim. This PR does not change the behavior.

This PR is a part of the following issue, and a new mode will be added in a few weeks. https://github.com/autowarefoundation/autoware_launch/issues/1100

universe PR: https://github.com/autowarefoundation/autoware.universe/pull/8331

Tests performed

In psim, we verified that the activated nodes are properly switched. There was also no problem in executing scenario_sim. internal link: https://evaluation.tier4.jp/evaluation/reports/bc29eeab-daa3-55e1-8446-400bdb049517?project_id=prd_jt

Effects on system behavior

Not applicable.

Interface changes

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autowarefoundation / autoware_launch