Add deepseek c4 convergence test and v5p recipe

[suexu1025]

Description

1. to support different c4 variance version in c4_mperf datatype
2. add deepseek v3 convergence configs.
3. add deepseek v5p recipe

Tests

validate #2 convergence run and #3 configs

Checklist

Before submitting this PR, please make sure (put X in square brackets):

• [x] I have performed a self-review of my code.
• [x] I have necessary comments in my code, particularly in hard-to-understand areas.
• [x] I have run end-to-end tests tests and provided workload links above if applicable.
• [x] I have made or will make corresponding changes to the doc if needed.

[suexu1025]

will waiting for PR approval until merge, but need to tag 'pull ready' to unblock internal testing

[RissyRan]

Oh, one more thing, don't forget to squash commits into 1 commit for clean history. Thank you!