Move all flakes into modules/ and sep't, create deploy script for a1d2

Change-Id: Ie4d50fb8f16da193195beb139922a366b72b0b0a
diff --git a/modules/a1d2/networking.nix b/modules/a1d2/networking.nix
new file mode 100644
index 0000000..e9ceaf5
--- /dev/null
+++ b/modules/a1d2/networking.nix
@@ -0,0 +1 @@
+{ networking.hostName = "a1d2"; }