Update nix-develop and nix-direnv

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/common/configs/user/console/nix-develop/default.nix

@@ -35,7 +35,16 @@
           done
 
           if [[ -z "$devshell" ]]; then
-            if [ ! -f flake.nix ]; then cp "${./template.nix}" flake.nix; fi
+            if [ ! -f flake.nix ]; then
+              cp "${./template.nix}" flake.nix
+              chmod 755 flake.nix
+            fi
+
+            if [ ! treefmt.nix ]; then
+              cp "${./treefmt.nix}" treefmt.nix
+              chmod 755 treefmt.nix
+            fi
+
             nix develop -c "$SHELL"
           else
             nix develop self#"$devshell" -c "$SHELL"