refactor!(tmpfiles): expand power upon tmpfiles by deabstracting

This returns tmpfiles to its original form. Turns out that
making something too simple gives it less power.

hosts/solterra/users/amadaluzia/configs/waybar/config.jsonc

@@ -1,41 +0,0 @@
-{
-  "position": "bottom",
-  "height": 0,
-  "modules-left": ["custom/nixos", "niri/workspaces"],
-  "modules-center": ["mpris"],
-  "modules-right": ["tray", "wireplumber", "clock"],
-  "reload_style_on_change": true,
-  "custom/nixos": {
-    "format": "󱄅",
-    "on-click": "rofi -show drun",
-    "tooltip": false,
-  },
-  "mpris": {
-    "format": "{player_icon} {dynamic}",
-    "format-paused": "{status_icon} <i>{dynamic}</i>",
-    "format-stopped": "whitespace",
-    "interval": 1,
-    "dynamic-len": 64,
-    "player-icons": {
-      "default": "▶",
-      "mpv": "🎵",
-    },
-    "status-icons": {
-      "paused": "",
-      "paused": "⏸",
-    },
-  },
-  "clock": {
-    "format": " {:%H:%M}",
-    "tooltip-format": "{:%A, %B %d, %Y}",
-  },
-  "wireplumber": {
-    "format": "{icon} {volume}%",
-    "format-muted": "",
-    "on-click": "helvum",
-    "format-icons": ["", "", ""],
-  },
-  "tray": {
-    "icon-size": 18,
-  },
-}