Add samples

Signed-off-by: Slendi <slendi@socopon.com>

samples/build_system.dcfg

@@ -0,0 +1,21 @@
+fn lib = {
+	targets = [
+		{
+			name = 'kernel'
+			source = 'src/kernel'
+			output = 'bin/kernel.elf'
+			options = {
+				optimization = 'O2'
+				debug = false
+			}
+		}
+		{
+			name = 'initrd'
+			source = 'src/initrd'
+			output = 'bin/initrd.img'
+		}
+	]
+
+	parallel_jobs = 8
+	cache.enable = true
+}