Improve geometry APIs, to be closer to `euclid` #4835

Job	Run time
format	2m 24s
smithay-check-features	4m 53s
clippy-check	1m 12s
smithay-tests	2m 27s
check-msrv	1m 18s
anvil-check-features	2m 10s
check-minimal	1m 7s
Documentation on Github Pages	1m 8s
smallvil-check	49s
WLCS: Core tests	1m 20s
WLCS: Output tests	1m 4s
WLCS: Pointer input tests	1m 2s
WLCS: Bad Buffer Test	1m 11s
	22m 5s

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