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imlib: Vectorize math ops. #2421

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Benchmarks here: https://docs.google.com/spreadsheets/d/1-FNVKCEr8-6UYs8MUm6wgsOt2c8ihJ2mg9QXKkG91os/edit?gid=1912947035#gid=1912947035

Helium performance doesn't make a huge difference here because of the line processing overhead in draw_image() that has yet to be opitmized.

Depends on #2417.

@kwagyeman kwagyeman changed the title Kwabena/optimize math ops imlib: Vectorize math ops. Sep 17, 2024
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Code Size Report:

Firmware Text Diff Data Diff BSS Diff
ARDUINO_GIGA/firmware.elf 🔺0.05% (+816) ➖0.00% (+0) ➖0.00% (+0)
ARDUINO_NANO_33/firmware.elf 🔺0.00% (+8) ➖0.00% (+0) ➖0.00% (+0)
ARDUINO_NICLA_VISION/firmware.elf 🔺0.05% (+832) ➖0.00% (+0) ➖0.00% (+0)
ARDUINO_PORTENTA_H7/firmware.elf 🔺0.05% (+832) ➖0.00% (+0) ➖0.00% (+0)
OPENMV2/firmware.elf 🔺0.10% (+848) ➖0.00% (+0) ➖0.00% (+0)
OPENMV3/firmware.elf 🔺0.05% (+832) ➖0.00% (+0) ➖0.00% (+0)
OPENMV4/firmware.elf 🔺0.05% (+832) ➖0.00% (+0) ➖0.00% (+0)
OPENMV4P/firmware.elf 🔺0.05% (+832) ➖0.00% (+0) ➖0.00% (+0)
OPENMVPT/firmware.elf 🔺0.05% (+816) ➖0.00% (+0) ➖0.00% (+0)
OPENMV_RT1060/firmware.elf 🔺0.03% (+864) ➖0.00% (+0) ➖0.00% (+0)

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