[seraphis] performance_tests: framework updates

[UkoeHB]

This is a PR in my 'upstreaming seraphis_lib project', the changes here are not used anywhere yet.

• Allow custom parameter packs for tests. This enables changing parameters programmatically and reduces the number of test templates you need to compile.
• Improve error reporting for failed tests.

Future work

• TimingsDatabase improvements to better enable recording test results in a csv format.

[moneromooo-monero]

I do not see the point of this patch. Could you expand ?
At a push, the return value change might help in reproducing a failure quicker (if there was a per loop random seed, which I do not think there is atm), but the rest seems gratuitous. What am I missing ?

[UkoeHB]

@moneromooo-monero I need these changes to support the big seraphis perf tests:
https://github.com/UkoeHB/monero/blob/seraphis_lib/tests/performance_tests/seraphis_tx.h
https://github.com/UkoeHB/monero/blob/31a518f7db7dca3150acf4e3427b535e1d1943f8/tests/performance_tests/main.cpp#L247

Improved error reporting is just the - FAILED ON INIT and - FAILED ON LOOP stuff. Knowing which loop helps debug random vs non-random failures.