Add support for cells with non-local storage

[Jezurko]

• Move storage attributes from hl to core
• Add Interface for storage information on declarations
• Modify cell declarations to keep storage information
• Nuke GlobalRefs and replace them with DeclRefs
• Lower non-local cells to llvm
• Add tests

[github-actions]

Cpp-Linter Report ⚠️

Some files did not pass the configured checks!

clang-format reports: 11 file(s) not formatted

• include/vast/Dialect/Core/CoreAttributes.hpp
• include/vast/Dialect/Core/Interfaces/DeclStorageInterface.hpp
• lib/vast/CodeGen/DefaultDeclVisitor.cpp
• lib/vast/CodeGen/DefaultStmtVisitor.cpp
• lib/vast/Conversion/FromHL/Passes.cpp
• lib/vast/Conversion/ToLLVM/IRsToLLVM.cpp
• lib/vast/Conversion/ToMem/EvictStaticLocals.cpp
• lib/vast/Conversion/ToMem/RefsToSSA.cpp
• lib/vast/Conversion/ToMem/VarsToCells.cpp
• lib/vast/Dialect/Core/CoreAttributes.cpp
• lib/vast/Dialect/HighLevel/HighLevelOps.cpp

Have any feedback or feature suggestions? Share it here.