Massive refactor to accommodate RISC-V targets

- Refactored entire codebase (excluding the Insight component) to accommodate multiple target architectures (no longer specific to AVR)
- Deleted 'generate SVD' GDB monitor command - I will eventually move this functionality to the Bloom website
- Added unit size property to address spaces
- Many other changes which I couldn't be bothered to describe here

src/DebugServer/Gdb/CommandPackets/SupportedFeaturesQuery.hpp

@@ -34,6 +34,8 @@ namespace DebugServer::Gdb::CommandPackets
 
         void handle(
             DebugSession& debugSession,
+            const TargetDescriptor& gdbTargetDescriptor,
+            const Targets::TargetDescriptor& targetDescriptor,
             Services::TargetControllerService& targetControllerService
         ) override;