Move `trait SizeBytes` to new crate `re_byte_size` #15650

Job	Run time
paths-filter	5s
Checks / Rerun lints	29s
Checks / Check if running codegen would produce any changes	1m 4s
Checks / Lint markdown	18s
Checks / Spell Check	8s
Checks / Misc formatting	16s
Checks / markdown-paths-filter	5s
C++ tests	0s
Python Checks	0s
Deploy Landing Preview	0s
Checks / Check links	18s
Minimum CLI Build / Set Config (linux-x64)	2s
Rust Checks / Test on ${{ matrix.name }}	0s
Rust Checks / Rust lints (fmt, check, clippy, tests, doc)	8m 57s
Build rerun_js / Build rerun_js	3m 25s
Build web viewer / Build web viewer	2m 58s
Minimum CLI Build / Build rerun-cli (ubuntu-latest-16-cores)	5m 43s
Upload Web / Upload web build to google cloud (wasm32 + wasm-bindgen)	10s
Minimum Wheel Build / Set Config (linux-x64)	3s
Minimum Wheel Build / Build Wheels (ubuntu-latest-16-cores)	2m 25s
Minimum Wheel Test / Set Config (linux-x64)	6s
Minimum Wheel Test / Test Wheels (ubuntu-latest-16-cores)	3m 42s
	30m 14s

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