Enhancements for "Tag multiple objects" feature in UtilsPlugin2

[aat765]

First off, thank you for developing and maintaining the UtilsPlugin2. It's a very helpful tool!

I'm writing to suggest some enhancements for the "Tag multiple objects (alpha)" feature, which would greatly improve its usability and efficiency for editing tags of multiple objects in the table view.

Specifically, I propose the following additions:

1. Clone tag values: The ability to quickly clone the value of one tag to another for multiple selected objects would be extremely beneficial. For example, copying values from a "name" tag to a "name:en" tag for several hotels.

2. Search and replace with Regex support: Implementing search and replace functionality within the tag editor table, with support for regular expressions (Regex), would be incredibly powerful for bulk editing and fixing common tagging problems. This would allow for quick operations like removing prefixes from multiple tags.

3. Integrated object history: While JOSM has a history feature, accessing it requires deselecting the current objects. Integrating a history view directly within the tag editor table would streamline the process of reviewing past edits without losing the current selection.

These enhancements would significantly improve the workflow for editing multiple objects and make the UtilsPlugin2 even more valuable. Thank you for considering these suggestions.