Add CI PyPi release, rename to slim-trees

[pavelzw]

No description provided.

[github-actions]

(benchmark 4304310161 / attempt 1)
Base results / Our results / Change

Model	Size	Dump Time	Load Time
RandomForestRegressor	77.2 MiB / 12.7 MiB / 6.08 x	0.08 s / 0.10 s / 1.21 x	0.10 s / 0.09 s / 0.93 x
GradientBoostingRegressor	2.2 MiB / 1.1 MiB / 2.14 x	0.03 s / 0.16 s / 5.30 x	0.04 s / 0.11 s / 3.02 x
LGBMRegressor gbdt	5.3 MiB / 1.9 MiB / 2.74 x	0.18 s / 0.42 s / 2.31 x	0.02 s / 0.29 s / 11.71 x
LGBMRegressor gbdt large	57.6 MiB / 19.4 MiB / 2.97 x	1.89 s / 4.44 s / 2.35 x	0.31 s / 3.13 s / 10.19 x
LGBMRegressor rf	1.6 MiB / 0.5 MiB / 3.30 x	0.05 s / 0.09 s / 1.83 x	0.01 s / 0.08 s / 13.12 x