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/Exceptions/TargetControllerStartupFailure.hpp

@@ -7,12 +7,8 @@ namespace Exceptions
     class TargetControllerStartupFailure: public Exception
     {
     public:
-        explicit TargetControllerStartupFailure(const std::string& message): Exception(message) {
-            this->message = message;
-        }
-
-        explicit TargetControllerStartupFailure(const char* message): Exception(message) {
-            this->message = std::string(message);
-        }
+        explicit TargetControllerStartupFailure(const std::string& message)
+            : Exception(message)
+        {}
     };
 }