Fix stub not created

[badetitou]

fix #61

When not using -i, we enable the jdt option setBindingsRecovery(true);
that allows us to resolve elements without binding.

[badetitou]

In this PR I have

• Refactor the code to extract the method extractModifierOfTypeFrom to organize the code better
• Improve the method asException to build a new Exception concept only if the parameter is not an Exception yet
• Change ensureImplementedInterfaces to use ensureFamixInterface instead of ensureFamixType.
  • This modification is an optimization of the code, and fixes problems when using the AST parser with setBindingsRecovery(true);
• Set jdtParser.setBindingsRecovery(true); when incrementalParsing is not activated
• Fix an import in the test_src by adding the class Book in the test_src ad_hoc.annotations

With this PR, apart from issue #61,

• we are now also able to extract Annotations not define in the classpath
• We better deal with Exception