Build original Ada port core, V client, and x86-64 boot milestone

host_library.gpr

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+project Host_Library is
+   for Languages use ("Ada");
+   for Source_Dirs use ("core", "abi");
+   for Object_Dir use "build/library-obj";
+   for Library_Dir use "build/lib";
+   for Library_Name use "agila_host";
+   for Library_Kind use "dynamic";
+   for Library_Interface use ("Agila_ABI");
+   for Library_Auto_Init use "true";
+   package Compiler is
+      for Default_Switches ("Ada") use ("-gnat2022", "-gnata", "-gnatwa", "-gnato", "-fPIC");
+   end Compiler;
+end Host_Library;