refactor: generalize display impls, rename trait, move it to jingle_s… #687

Job	Run time
macos (macos-14, aarch64, 3.13)	2m 29s
linux (ubuntu-22.04, x86_64)	5m 39s
sdist	19s
macos (macos-14, aarch64, 3.11)	1m 57s
macos (macos-14, aarch64, 3.12)	2m 12s
Build wheel on ${{ matrix.platform.name }}	0s
	12m 36s

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