remove runtests script and add gitlab ci

[laurentheirendt]

No description provided.

[codecov]

Codecov Report

Merging #164 (64a0f01) into develop (7a91f2d) will decrease coverage by 0.09%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop     #164      +/-   ##
===========================================
- Coverage    89.28%   89.19%   -0.10%     
===========================================
  Files           12       12              
  Lines          476      509      +33     
===========================================
+ Hits           425      454      +29     
- Misses          51       55       +4     

Impacted Files	Coverage Δ
src/GigaSOM.jl	100.00% <ø> (ø)
src/base/distributed.jl	95.23% <ø> (+0.07%)	⬆️
src/io/input.jl	88.33% <100.00%> (+3.88%)	⬆️
src/base/trainutils.jl	82.35% <0.00%> (-2.50%)	⬇️
src/io/process.jl	86.53% <0.00%> (-1.22%)	⬇️
src/io/splitting.jl	100.00% <0.00%> (ø)
src/visualization/Plotting.jl	0.00% <0.00%> (ø)
src/analysis/embedding.jl	95.45% <0.00%> (+0.33%)	⬆️

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