s0mev1rtn0de-nix -> kyra + {hazel, lynn, ivy, mel}: rename + modularity

Signed-off-by: s0me1newithhand7s <git+me@hand7s.org>

kyra/nixpkgs/config.nix

@@ -0,0 +1,8 @@
+_: {
+  nixpkgs = {
+    config = {
+      allowBroken = true;
+      allowUnfree = true;
+    };
+  };
+}

kyra/nixpkgs/platform.nix

@@ -0,0 +1,6 @@
+_: {
+  nixpkgs = {
+    system = "x86_64-linux";
+    hostPlatform = "x86_64-linux";
+  };
+}