refactor: simplify project structure

hw/spinal/projectname/Config.scala

@@ -0,0 +1,16 @@
+package projectname
+
+import spinal.core._
+import spinal.core.sim._
+
+object Config {
+  def spinal = SpinalConfig(
+    targetDirectory = "hw/gen",
+    defaultConfigForClockDomains = ClockDomainConfig(
+      resetActiveLevel = HIGH
+    ),
+    onlyStdLogicVectorAtTopLevelIo = true
+  )
+
+  def sim = SimConfig.withConfig(spinal).withFstWave
+}