Allow configuring a delay between two repetitions

[cescoffier]

Fix #344

[codecov]

Codecov Report

Merging #498 (9b6d45a) into main (45eb8ee) will increase coverage by 0.09%.
The diff coverage is 87.11%.

@@             Coverage Diff              @@
##               main     #498      +/-   ##
============================================
+ Coverage     90.00%   90.09%   +0.09%     
- Complexity     2927     3006      +79     
============================================
  Files           382      382              
  Lines         11340    11594     +254     
  Branches       1420     1447      +27     
============================================
+ Hits          10206    10446     +240     
- Misses          579      583       +4     
- Partials        555      565      +10     

Impacted Files	Coverage Δ	Complexity Δ
...e/mutiny/helpers/spies/MultiOnCancellationSpy.java	69.23% <33.33%> (-30.77%)	6.00 <2.00> (+2.00)	⬇️
.../smallrye/mutiny/helpers/test/AssertionHelper.java	73.39% <42.85%> (-4.16%)	48.00 <2.00> (+3.00)	⬇️
...n/java/io/smallrye/mutiny/groups/UniOnFailure.java	91.89% <50.00%> (-8.11%)	25.00 <1.00> (-1.00)
...rye/mutiny/operators/multi/MultiRepeatUntilOp.java	95.45% <75.00%> (-4.55%)	5.00 <0.00> (ø)
...llrye/mutiny/helpers/test/UniAssertSubscriber.java	91.85% <87.83%> (-5.83%)	54.00 <27.00> (+17.00)	⬇️
...smallrye/mutiny/helpers/test/AssertSubscriber.java	93.90% <93.06%> (-3.54%)	73.00 <48.00> (+43.00)	⬇️
...main/java/io/smallrye/mutiny/groups/UniRepeat.java	100.00% <100.00%> (ø)	7.00 <3.00> (+2.00)
...ye/mutiny/operators/multi/MultiRepeatWhilstOp.java	86.66% <100.00%> (+0.45%)	2.00 <0.00> (ø)
...mallrye/mutiny/operators/multi/MultiFlatMapOp.java	85.98% <0.00%> (-0.32%)	3.00% <0.00%> (ø%)
... and 6 more

[jponge]

@cescoffier see 8b0eadd

[cescoffier]

LGTM!