refactor: Use haumea for filesystem-based module system for flake outputs

refactor: Use hyphen(`-`) for variable names & folder names(except Python), replace all unserscore(`_`) with hyphen(`-`).

flake.lock

@@ -568,6 +568,27 @@
         "type": "github"
       }
     },
+    "haumea": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1685133229,
+        "narHash": "sha256-FePm/Gi9PBSNwiDFq3N+DWdfxFq0UKsVVTJS3cQPn94=",
+        "owner": "nix-community",
+        "repo": "haumea",
+        "rev": "34dd58385092a23018748b50f9b23de6266dffc2",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "ref": "v0.2.2",
+        "repo": "haumea",
+        "type": "github"
+      }
+    },
     "home-manager": {
       "inputs": {
         "nixpkgs": [
@@ -1357,6 +1378,7 @@
         "daeuniverse": "daeuniverse",
         "disko": "disko",
         "doomemacs": "doomemacs",
+        "haumea": "haumea",
         "home-manager": "home-manager_2",
         "hyprland": "hyprland",
         "impermanence": "impermanence",