added some flake templates.

templates/default.nix

@@ -0,0 +1,18 @@
+{
+  inputs,
+  outputs,
+  ...
+}: {
+  default={
+    path=./default;
+    description="a basic blank devshell flake";
+  };
+  hugo = {
+    path = ./hugo;
+    description = "a flake for getting a hugo website up and running";
+  };
+  latex = {
+    path = ./latex;
+    description = "A flake containing a basic latex environment";
+  };
+}