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/ProjectConfig.hpp

@@ -240,7 +240,7 @@ struct ProjectConfig
      * omit the 'insight' node from their bloom.yaml file, entirely. In this case, Bloom should fall back to a default
      * constructed, project-level, InsightConfig instance.
      */
-    InsightConfig insightConfig = InsightConfig();
+    InsightConfig insightConfig = {};
 
     bool debugLogging = false;