Add comparison of properties to compare_entities

Reactivate !106 for this.

~~Resolved merge conflicts~~ Create a new MR based on dev and integrate changes from this MR.
Implemented missing abstract property and record type comparisons and added tests for value, unit, importance, inheritance, ...
Checked also with caosadvancedtools and caoscrawler in their dev versions

Edited Jan 07, 2025 by Alexander Schlemmer

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