Deploy pyspark3d with pip

[JulienPeloton]

pip install pyspark3d

Still to be understood:

• We release the assembly JAR with the package. I couldn't find how to load it within a pyspark shell session if it has not been added using --jars ....

[codecov-io]

Codecov Report

Merging #98 into master will decrease coverage by 0.14%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #98      +/-   ##
==========================================
- Coverage   96.33%   96.19%   -0.15%     
==========================================
  Files          32       32              
  Lines        1202     1210       +8     
  Branches      217      217              
==========================================
+ Hits         1158     1164       +6     
- Misses         44       46       +2

Flag	Coverage Δ
#python	93.51% <ø> (-0.45%)	:arrow_down:
#scala	97.24% <ø> (ø)	:arrow_up:

Impacted Files	Coverage Δ
pyspark3d_conf.py	88.23% <0%> (-11.77%)	:arrow_down:

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