Dist debugger manual signals

[well-mannered-goat]

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Detailed description

Ignore the s390x commit, have set that up for s390x build etc, forgot to remove it, will remove it before merging

classify the signal receive by the debuggee as internal or external
internal - due to instruction or some other cause
external - due to usage of syscall like kill to forcefully send a signal to the debuggee

if the signal is marked to be skipped
we skip the instruction causing the signal to avoid re receiving the signal

but if the signal is sent externally, do not skip an instruction

Test plan

added some tests, and removed the broken flags as in the issue, right checking it in the CI run

Closing issues

closes #5332