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/Targets/TargetPeripheralSignalDescriptor.hpp

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <cstdint>
+#include <string>
+#include <optional>
+
+namespace Targets
+{
+    struct TargetPeripheralSignalDescriptor
+    {
+    public:
+        std::string padName;
+        std::optional<std::uint16_t> index;
+
+        TargetPeripheralSignalDescriptor(
+            const std::string& padName,
+            const std::optional<std::uint16_t>& index
+        );
+
+        TargetPeripheralSignalDescriptor(const TargetPeripheralSignalDescriptor& other) = delete;
+        TargetPeripheralSignalDescriptor& operator = (const TargetPeripheralSignalDescriptor& other) = delete;
+
+        TargetPeripheralSignalDescriptor(TargetPeripheralSignalDescriptor&& other) noexcept = default;
+        TargetPeripheralSignalDescriptor& operator = (TargetPeripheralSignalDescriptor&& other) = default;
+
+        [[nodiscard]] TargetPeripheralSignalDescriptor clone() const;
+    };
+}