C++ `columns` method for convenient `send_columns` call through archetypes #16470

Job	Run time
paths-filter	6s
Checks / Rerun lints	45s
Checks / Check if running codegen would produce any changes	55s
Checks / Lint markdown	16s
Checks / Misc formatting	15s
Checks / Spell Check	9s
Checks / markdown-paths-filter	7s
Python Checks	0s
Deploy Landing Preview	0s
C++ tests / C++ formatting check	3s
C++ tests / matrix_prep	6s
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 38s
Build rerun_js / Build rerun_js	3m 28s
Build web viewer / Build web viewer	3m 10s
Checks / Check links	0s
Minimum CLI Build / Build rerun-cli (ubuntu-latest-16-cores)	28s
C++ tests / C++ build & test - ${{ matrix.name }}	0s
Minimum Wheel Build	0s
Minimum Wheel Test	0s
Upload Web / Upload web build to google cloud (wasm32 + wasm-bindgen)	5s
	18m 33s

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