chore: use &'static str for chip names as much as possible

[nhtyy]

Returning a string is an allocation, Ive at least gotten rid of it for basic comparsions but it could still use a clean up, honestly might better to make a ChipName enum.

[nhtyy]

Still work to do around this if were supportive of continuing to use strings, ie: anywhere I call to_string

If we changed to an enum I think we could even have const name(&self) -> ChipName

[github-actions]

SP1 Performance Test Results

Branch: n/air_name_as_str
Commit: c165917
Author: nhtyy

program	cycles	execute (mHz)	core (kHZ)	compress (KHz)	time	success
fibonacci	11291	0.17	2.87	0.46	25s	✅
ssz-withdrawals	2757356	17.32	126.33	34.84	1m19s	✅
tendermint	12593597	6.65	267.73	99.64	2m8s	✅