use juliapkg.libjulia() for faster init in juliacall

[cjdoris]

No description provided.

[github-actions]

Benchmark Results (Julia v1)

Time benchmarks

	main	fce8a57...	main / fce8a57...
basic/@py/pydict/init	0.259 ± 0.057 ms	0.258 ± 0.058 ms	1 ± 0.32
basic/@py/pydict/pydel	0.26 ± 0.032 ms	0.258 ± 0.024 ms	1 ± 0.16
basic/julia/pydict/init	0.232 ± 0.07 ms	0.232 ± 0.075 ms	1 ± 0.44
basic/julia/pydict/pydel	0.237 ± 0.049 ms	0.237 ± 0.049 ms	1 ± 0.29
gc/full	0.657 ± 0.0098 s	0.647 ± 0.0064 s	1.02 ± 0.018
time_to_load	2.14 ± 0.025 s	2.11 ± 0.015 s	1.02 ± 0.014

Memory benchmarks

	main	fce8a57...	main / fce8a57...
basic/@py/pydict/init	5.01 k allocs: 0.0764 MB	5.01 k allocs: 0.0764 MB	1
basic/@py/pydict/pydel	5.01 k allocs: 0.0764 MB	5.01 k allocs: 0.0764 MB	1
basic/julia/pydict/init	4.01 k allocs: 0.0612 MB	4.01 k allocs: 0.0612 MB	1
basic/julia/pydict/pydel	4.01 k allocs: 0.0612 MB	4.01 k allocs: 0.0612 MB	1
gc/full	0 allocs: 0 B	0 allocs: 0 B
time_to_load	0.143 k allocs: 10.6 kB	0.143 k allocs: 10.6 kB	1