New script that waits until artifacts lands on a maven repo

[cescoffier]

Related to #405

[codecov]

Codecov Report

Merging #455 (3366677) into master (77b3c3a) will increase coverage by 0.21%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #455      +/-   ##
============================================
+ Coverage     90.11%   90.33%   +0.21%     
- Complexity     2777     2880     +103     
============================================
  Files           373      373              
  Lines         10668    10952     +284     
  Branches       1309     1346      +37     
============================================
+ Hits           9614     9894     +280     
+ Misses          559      534      -25     
- Partials        495      524      +29     

Impacted Files	Coverage Δ	Complexity Δ
.../io/smallrye/mutiny/helpers/queues/DrainUtils.java	80.00% <0.00%> (-15.56%)	12.00% <0.00%> (-4.00%)
...iny/operators/multi/builders/BaseMultiEmitter.java	83.33% <0.00%> (-4.17%)	20.00% <0.00%> (-1.00%)
...ain/java/io/smallrye/mutiny/groups/UniOnEvent.java	56.25% <0.00%> (-3.75%)	7.00% <0.00%> (ø%)
...erators/multi/builders/SerializedMultiEmitter.java	82.27% <0.00%> (-2.54%)	26.00% <0.00%> (ø%)
...y/operators/multi/processors/UnicastProcessor.java	95.57% <0.00%> (-1.77%)	44.00% <0.00%> (-1.00%)
...mallrye/mutiny/operators/multi/MultiFlatMapOp.java	85.04% <0.00%> (-1.25%)	3.00% <0.00%> (ø%)
...main/java/io/smallrye/mutiny/groups/MultiSkip.java	100.00% <0.00%> (ø)	14.00% <0.00%> (ø%)
...main/java/io/smallrye/mutiny/groups/UniCreate.java	100.00% <0.00%> (ø)	24.00% <0.00%> (ø%)
...main/java/io/smallrye/mutiny/groups/UniOnItem.java	100.00% <0.00%> (ø)	31.00% <0.00%> (ø%)
...main/java/io/smallrye/mutiny/groups/UniRepeat.java	100.00% <0.00%> (ø)	5.00% <0.00%> (ø%)
... and 152 more