Feature request: Support current partition hash or count value in junit report file name.

[harlequin]

Motivation

I want to use nextest during ci across several machines. Each partition shall create a unique junit.xml output on a common storage.

After all test machines are done, the junit files could be merged (not expected that nextest is doing this!. Only to show the use case)

Proposal

Implement a "template" feature inside nextest.toml to use like

[profile.ci.junit] 
path = "TEST-{{partition.hash}}.xml"
store-success-output = false
store-failure-output = true

Alternatives

What even would work as workaround is to define the junit.path as command line parameter for nextest run, so with this we would have the possibility to define own filenames

Additional context

No response