Renamed part description files to target description files.

Introduced a generic target description file class with an AVR8 derivation.
Moved AVR8 target description files

src/Targets/TargetDescription/Pinout.hpp

@@ -0,0 +1,19 @@
+#pragma once
+
+#include <string>
+#include <vector>
+
+namespace Bloom::Targets::TargetDescription
+{
+    struct Pin
+    {
+        std::string pad;
+        int position;
+    };
+
+    struct Pinout
+    {
+        std::string name;
+        std::vector<Pin> pins;
+    };
+}