feat(nix): add macmon

Signed-off-by: Seongmin Lee <boltlessengineer@proton.me>

boltless.me 059f7774 11573188

verified
Changed files
+1
nix
+1
nix/flake.nix
··· 61 pkgs.iina 62 pkgs.janet 63 pkgs.jpm 64 pkgs.meld 65 pkgs.nodejs_24 66 pkgs.qmk
··· 61 pkgs.iina 62 pkgs.janet 63 pkgs.jpm 64 + pkgs.macmon 65 pkgs.meld 66 pkgs.nodejs_24 67 pkgs.qmk