Apply binary compatibility plugin to Detekt

[chao2zhang]

This will help catch API changes like discussed in #3310 (comment)
There is also a temporary workaround to exclude rootProject from compability check. See Kotlin/binary-compatibility-validator#32

When running ./gradlew build, if there is any change in :detekt-api, the task will fail with the following message

~/detekt(api*) » ./gradlew build  
> Task :detekt-api:apiCheck FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':detekt-api:apiCheck'.
> API check failed for project detekt-api.
  --- /Users/cazhang/detekt/detekt-api/api/detekt-api.api
  +++ /Users/cazhang/detekt/detekt-api/build/api/detekt-api.api
  @@ -315,17 +315,20 @@
   
   public final class io/gitlab/arturbosch/detekt/api/Location : io/gitlab/arturbosch/detekt/api/Compactable {
        public static final field Companion Lio/gitlab/arturbosch/detekt/api/Location$Companion;
  -     public fun <init> (Lio/gitlab/arturbosch/detekt/api/SourceLocation;Lio/gitlab/arturbosch/detekt/api/TextLocation;Ljava/lang/String;)V
  +     public fun <init> (Lio/gitlab/arturbosch/detekt/api/SourceLocation;Lio/gitlab/arturbosch/detekt/api/TextLocation;Ljava/lang/String;Ljava/io/File;)V
  +     public synthetic fun <init> (Lio/gitlab/arturbosch/detekt/api/SourceLocation;Lio/gitlab/arturbosch/detekt/api/TextLocation;Ljava/lang/String;Ljava/io/File;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
        public fun <init> (Lio/gitlab/arturbosch/detekt/api/SourceLocation;Lio/gitlab/arturbosch/detekt/api/TextLocation;Ljava/lang/String;Ljava/lang/String;)V
        public fun compact ()Ljava/lang/String;
        public fun compactWithSignature ()Ljava/lang/String;
        public final fun component1 ()Lio/gitlab/arturbosch/detekt/api/SourceLocation;
        public final fun component2 ()Lio/gitlab/arturbosch/detekt/api/TextLocation;
        public final fun component3 ()Ljava/lang/String;
  -     public final fun copy (Lio/gitlab/arturbosch/detekt/api/SourceLocation;Lio/gitlab/arturbosch/detekt/api/TextLocation;Ljava/lang/String;)Lio/gitlab/arturbosch/detekt/api/Location;
  -     public static synthetic fun copy$default (Lio/gitlab/arturbosch/detekt/api/Location;Lio/gitlab/arturbosch/detekt/api/SourceLocation;Lio/gitlab/arturbosch/detekt/api/TextLocation;Ljava/lang/String;ILjava/lang/Object;)Lio/gitlab/arturbosch/detekt/api/Location;
  +     public final fun component4 ()Ljava/io/File;
  +     public final fun copy (Lio/gitlab/arturbosch/detekt/api/SourceLocation;Lio/gitlab/arturbosch/detekt/api/TextLocation;Ljava/lang/String;Ljava/io/File;)Lio/gitlab/arturbosch/detekt/api/Location;
  +     public static synthetic fun copy$default (Lio/gitlab/arturbosch/detekt/api/Location;Lio/gitlab/arturbosch/detekt/api/SourceLocation;Lio/gitlab/arturbosch/detekt/api/TextLocation;Ljava/lang/String;Ljava/io/File;ILjava/lang/Object;)Lio/gitlab/arturbosch/detekt/api/Location;
        public fun equals (Ljava/lang/Object;)Z
        public final fun getFile ()Ljava/lang/String;
  +     public final fun getFile2 ()Ljava/io/File;
        public final fun getSource ()Lio/gitlab/arturbosch/detekt/api/SourceLocation;
        public final fun getText ()Lio/gitlab/arturbosch/detekt/api/TextLocation;
        public fun hashCode ()I
  
   You can run :detekt-api:apiDump task to overwrite API declarations

[codecov]

Codecov Report

Merging #3320 (e31c46d) into master (0d6ac64) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #3320   +/-   ##
=========================================
  Coverage     80.33%   80.33%           
  Complexity     2719     2719           
=========================================
  Files           445      445           
  Lines          8165     8165           
  Branches       1552     1552           
=========================================
  Hits           6559     6559           
  Misses          774      774           
  Partials        832      832           

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[BraisGabin]

👏🏻👏🏻👏🏻👏🏻

[chao2zhang]

Is it possible to merge this PR already? The benefit of this PR overwhelms its temporary hack.

[BraisGabin]

I can't remove the workaround after I merge #3322 🤔. The issue is still there.

[chao2zhang]

Let me open a new issue to further investigate.