Fix name-break address parsing (#707)

[theguy147]

Fix name-break address parsing (#707)

Description/Motivation/Screenshots

see #707

My proposed solution is to move the address parsing to NamedBreakpoint so the original user input will be displayed when hitting the breakpoint but the location will be converted to an address and given to GDBs Breakpoint as a string with a prefixed *.

I also added a test (which was missing previously) to check if the name-break command throws an exception.

How Has This Been Tested?

Architecture	Yes/No	Comments
x86-32	✔️
x86-64	✔️
ARM	✖️
AARCH64	✖️
MIPS	✖️
POWERPC	✖️
SPARC	✖️
RISC-V	✖️
make test	✔️

Checklist

• My PR was done against the dev branch, not master.
• My code follows the code style of this project.
• My change includes a change to the documentation, if required.
• My change adds tests as appropriate.
• I have read and agree to the CONTRIBUTING document.