[java] ExcessivePublicCount should report number of public "things"

[Ledmington]

Many other "parametric" rules (such as NPathComplexity, CyclomaticComplexity etc.) report both the threshold and the number which triggered the rule. The rule ExcessivePublicCount does not do it and just says This class has a bunch of public methods and attributes.

Affected rules:

• java
  • ExcessiveImports
  • ExcessiveParameterList
  • ExcessivePublicCount
• apex - see [apex] ExcessiveClassLength/ExcessiveParameterList include the metric in the message #6022
• plsql - see [plsql] Excessive*/Ncss*Count/NPathComplexity include the metric #6077