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

build/scripts/Targets/TargetDescriptionFiles/Services/AtdfService.php

@@ -323,6 +323,7 @@ class AtdfService
             isset($attributes['id']) ? strtolower($attributes['id']) : null,
             $this->stringService->tryStringToInt($attributes['start'] ?? null),
             $this->stringService->tryStringToInt($attributes['size'] ?? null),
+            null,
             $attributes['endianness'] ?? null,
         );
 

build/scripts/Targets/TargetDescriptionFiles/Services/ValidationService.php

@@ -606,7 +606,7 @@ class ValidationService
         if ($register->size === null) {
             $failures[] = 'Missing size';
 
-        } elseif ($register->size < 1) {
+        } elseif ($register->size < 1 || $register->size > 8) {
             $failures[] = 'Invalid size (' . $register->size . ')';
         }
 

build/scripts/Targets/TargetDescriptionFiles/Services/Xml/FromXmlService.php

@@ -116,6 +116,7 @@ class FromXmlService
             $attributes['key'] ?? null,
             $this->stringService->tryStringToInt($attributes['start'] ?? null),
             $this->stringService->tryStringToInt($attributes['size'] ?? null),
+            $this->stringService->tryStringToInt($attributes['unit-size'] ?? null),
             $attributes['endianness'] ?? null,
         );
 

build/scripts/Targets/TargetDescriptionFiles/Services/Xml/ToXmlService.php

@@ -70,6 +70,10 @@ class ToXmlService
         $element->setAttribute('start', $this->stringService->tryIntToHex($addressSpace->startAddress, 8));
         $element->setAttribute('size', $addressSpace->size);
 
+        if (!empty($addressSpace->unitSize)) {
+            $element->setAttribute('unit-size', $addressSpace->unitSize);
+        }
+
         if (!empty($addressSpace->endianness)) {
             $element->setAttribute('endianness', strtolower($addressSpace->endianness));
         }