Restructured the amaranth HDL files.

re-bba/LedBlinker/LedBlinker.py

@@ -0,0 +1,22 @@
+from amaranth import *
+
+class LEDBlinker(Elaboratable):
+    def elaborate(self, platform):
+        m = Module()
+
+        led = platform.request("led")
+
+        half_freq = int(platform.default_clk_frequency // 2)
+        timer = Signal(range(half_freq + 1))
+
+        with m.If(timer == half_freq):
+            m.d.sync += led.eq(~led)
+            m.d.sync += timer.eq(0)
+        with m.Else():
+            m.d.sync += timer.eq(timer + 1)
+
+        return m
+
+from amaranth_boards.icebreaker import *
+
+ICEBreakerPlatform().build(LEDBlinker(), do_program=True)