Some Cava optimization

• Optimize Cava's CPU schedule.
• Add fork-fusion pass for fusing unrelated but adjacent fork-joins.
• Add intrinsic functions to math expressions.
• Add print pass for debugging schedules.
• Avoid some edges in dot output to help little xdot out.
• TODO: need more relaxed bounds for forkify to parallelize demosaic.

requested review from @aaronjc4

assigned to @rarbore2

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• 0958995e - unroll channel loop in gamut with intention of fusion the ctrl pts

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• 0b1a9eb3 - Add intrinsics to math exprs, array slf gets rid of first ctrl pts

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• 9397f55d - Fork fusion

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• bb507941 - Crop the small example image to round dimensions

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• a3ec1d56 - Reorganize cpu schedule

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marked this merge request as ready

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merged

mentioned in commit d8f53bc7