Added the ability to change element names in Search Tree

[DanilGolikov]

Description

Added the ability to change element names in the Search Tree. A new checkbox "Names replace" has been introduced. When set to "true," the changes will be applied to the element names.

Motivation and Context

When developing load testing scripts or recording traffic, it is often necessary to rename elements en masse. Currently, to rename elements en masse, users need to open the .jmx file in a text editor, change the names there, save, and reopen the script, which is not very convenient. There was no similar issue found on GitHub.

How Has This Been Tested?

The changes were tested manually. Tests were conducted on a small script with several different elements and on a large script used in business. The results of manual tests were successful.
Testing environment:
OS: Windows 11
System type: x64
RAM: 16Gb
CPU: Intel® Core™ i7-6700HQ
Core: 4
Threads: 8

Screenshots (if appropriate):

Types of changes

• New feature (non-breaking change which adds functionality)

Checklist:

• My code follows the code style of this project.
• I have updated the documentation accordingly.