[GDB-JIT][Linux] Add support of base classes introspection (dotnet/coreclr#9083)

[GDB-JIT][Linux] Add support of base classes introspection   (dotnet/coreclr#9083)

* [GDB-JIT] Initial support of inherited fields displaying for classes

* [GDB-JIT] Fix link to already existed parent class

* [GDB-JIT] Fix incorrect processing of links to parent class with RefTypeInfo

* [GDB-JIT] Ignore inheritance from System.ValueType

* [GDB-JIT] Insert additional check whether we already dump parent class

Commit migrated from https://github.com/dotnet/coreclr/commit/3ff336da45a4f755bf94a60a1774f615b801f45f