expose line traitlets through plot options user API #305

Job	Run time
Code style checks	17s
Code style checks	17s
Code style checks	17s
PEP 517	27s
PEP 517	27s
PEP 517	27s
Security audit	19s
Security audit	19s
Security audit	19s
Python 3.10 with coverage checking, all deps, and remote data	2m 9s
Python 3.10 with coverage checking, all deps, and remote data	2m 9s
Python 3.10 with coverage checking, all deps, and remote data	2m 9s
OS X - Python 3.9	3m 28s
OS X - Python 3.9	3m 28s
OS X - Python 3.9	3m 28s
Windows - Python 3.8	1h 44m 7s
Windows - Python 3.8	1h 42m 35s
Windows - Python 3.8	15m 20s
Python 3.11 with latest dev versions of key dependencies, and remote data	2m 47s
Python 3.11 with latest dev versions of key dependencies, and remote data	2m 47s
Python 3.11 with latest dev versions of key dependencies, and remote data	2m 47s
	4h 10m 23s

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