Support single-file core dump generation on Linux/MacOS in 8.0

[mikem8361]

createdump and a portion of the DAC need to be linked into the host.

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Issue Details

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createdump and a portion of the DAC need to be linked into the host.

Author:	mikem8361
Assignees:	mikem8361
Labels:	enhancement, area-Diagnostics-coreclr
Milestone:	Future

[tommcdon]

fyi @agocke

[tommcdon]

Closing via #84864