Don't exclude the naming rules by default for tests

[BraisGabin]

In general, the rules that apply to good naming patterns in production code can be applied for the test code too. The only exception are the function names. And to be honest that's mainly because of JUnit but I don't want to cross that bridge yet. So this PR remove the excludes for all the rules except FunctionNaming.

I also changed our (not the default one) value for TopLevelPropertyNaming.constantPattern:. Otherwise I would need to do this changes like this that I think that are way worst:

     describe("QualifiedNameProcessor") {
 
         it("fqNamesOfTestFiles") {
-            val ktFile = compileContentForTest(code)
+            val ktFile = compileContentForTest(CODE)
             val processor = QualifiedNameProcessor()
             processor.onProcess(ktFile, BindingContext.EMPTY)
             processor.onFinish(listOf(ktFile), result, BindingContext.EMPTY)
@@ -54,7 +54,7 @@ private val result = object : Detektion {
     }
 }
 
-private const val code = """
+private const val CODE = """
     package io.gitlab.arturbosch.detekt.sample
 
     class Foo {}

closes #4144

[codecov]

Codecov Report

Merging #4438 (89c63d4) into main (eb0f1cf) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##               main    #4438      +/-   ##
============================================
- Coverage     84.32%   84.32%   -0.01%     
  Complexity     3293     3293              
============================================
  Files           472      472              
  Lines         10522    10521       -1     
  Branches       1885     1885              
============================================
- Hits           8873     8872       -1     
  Misses          671      671              
  Partials        978      978              

Impacted Files	Coverage Δ
...etekt/generator/printer/defaultconfig/Exclusion.kt	96.66% <100.00%> (-0.11%)	⬇️

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