Fix name_break for current location and add tests

[Kileak]

Description

Fix for using name-break without specifying an address (which should just set the breakpoint at current pc).
Also adding more thorough tests to check the different usages work.

With the current implementation, when setting a named breakpoint without specifying a location, the location will be set to *$pc. When reattaching to a process, the location of breakpoints gets re-evaluated, which results in all named breakpoints being changed to the current pc when attaching.

The fix will evaluate the location on set now, when no address argument is given and set the breakpoint with a specific address.

Checklist

• My code follows the code style of this project.
• My change includes a change to the documentation, if required.
• If my change adds new code, adequate tests have been added.
• I have read and agree to the CONTRIBUTING document.

[github-actions]

🤖 Coverage update for cef089c 🔴

	Old	New
Commit	ee605f9	cef089c
Score	71.0775%	71.0582% (-0.0193)

[Grazfather]

nice. Thank you!