[Clava-JS] Version 3.0.19

Merge branch 'staging' of github.com:specs-feup/clava into PluginAndTool

Full Clava 3.0 release

[ClangAstParser] Sets system includes threshold to 0 as default

- Otherwise, the AST might be incomplete;

[ClangAstDumper] Adds support for CXXAddrspaceCastExpr and CXXDynamic…

…CastExpr

[ClangAstParser] Updates ClangAstDumper to version v4.2.15

[ClangAstParser] Updates ClangAstDumper to version v4.2.14

[ClangAstParser] Updates ClangAstDumper to version v4.2.13

[ClangAstParser] Updates dumper to version v4.2.12

[ClangAstWebResource] Updates ClangAstDumper to v4.2.11