Introduce --all-rules flag

[arturbosch]

Part one to replace and deprecate --fail-fast in the long run - #2267

@BraisGabin @cortinico I accidentally merged #3247 and needed to revert it. So this is the same as #3247.
Now really for 1.16.0.

[codecov]

Codecov Report

Merging #3253 (2eb05f7) into master (f9e3e41) will increase coverage by 0.02%.
The diff coverage is 88.88%.

@@             Coverage Diff              @@
##             master    #3253      +/-   ##
============================================
+ Coverage     80.43%   80.45%   +0.02%     
+ Complexity     2740     2739       -1     
============================================
  Files           448      448              
  Lines          8281     8280       -1     
  Branches       1573     1572       -1     
============================================
+ Hits           6661     6662       +1     
+ Misses          772      771       -1     
+ Partials        848      847       -1     

Impacted Files	Coverage Δ	Complexity Δ
...lin/io/github/detekt/tooling/api/spec/RulesSpec.kt	100.00% <ø> (ø)	0.00 <0.00> (ø)
...otlin/io/gitlab/arturbosch/detekt/core/Analyzer.kt	81.08% <50.00%> (ø)	9.00 <0.00> (ø)
.../kotlin/io/gitlab/arturbosch/detekt/cli/CliArgs.kt	100.00% <100.00%> (ø)	3.00 <0.00> (ø)
...ain/kotlin/io/gitlab/arturbosch/detekt/cli/Spec.kt	80.43% <100.00%> (ø)	0.00 <0.00> (ø)
...ab/arturbosch/detekt/core/config/AllRulesConfig.kt	44.44% <100.00%> (ø)	4.00 <2.00> (?)
...n/io/github/detekt/tooling/dsl/RulesSpecBuilder.kt	94.73% <100.00%> (ø)	7.00 <1.00> (ø)

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[picklebento]

I got confused when reading the code and documentation around failFast as they are at odds. Thank you for publishing this to wipe off such confusion!