@Builtin_Method shall not be publicly accessible

[JaroslavTulach]

Pull Request Description

• will fix Builtin methods shall not be publicly visible #6282
  • hides the differences when invoking @Builtin_Method away from Standard.Base user sights
• first of all let's emit a warning when @Builtin_Method isn't private
  • the CI fails
  • fix 104 failures by moving the methods into private modules
• remove autoRegister flag of builtin methods
  • now a builtin method is "just a bridge" between Enso code and Java runtime implementation
  • it will no longer automagically be registered anywhere
  • the method has to be registered somewhere and just the body is replaced by builtin invocation
• certain builtins need to be inlined
  • Error.throw, Panic.catch needs to keep correct stack trace
  • Debug.eval needs to be inlined for proper surrounding context
  • Function.<| needs to be inlined and invisible in the stack
  • those get an "exception" from the CI check

Checklist

Please ensure that the following checklist has been satisfied before submitting the PR:

• All code follows the
  Scala,
  Java,
• Unit tests continue to work

[JaroslavTulach]

• lintEnso nicely fails with all the @Builtin_Method that need to be hidden identified
• there is 104 of them right now
• time to hide them!

[JaroslavTulach]

• @AdRiley there is Any.to:

• enso/distribution/lib/Standard/Base/0.0.0-dev/src/Any.enso

  Lines 59 to 60 in c53d0a1

  	to : Any -> Any ! No_Such_Conversion
  	to self target_type = target_type.from self ...

• the type Email has to field
• they override each other!
• I don't think it is a good idea
• if nothing else, then the Enso linter gets confused...