feat: swaync notifications module

Adds a new module which connects to SwayNC to display information from the notifications deamon.

Resolves #7

docs/_Sidebar.md

@@ -30,6 +30,7 @@
 - [Label](label)
 - [Launcher](launcher)
 - [Music](music)
+- [Notifications](notifications)
 - [Script](script)
 - [Sys_Info](sys-info)
 - [Tray](tray)

docs/modules/Notifications.md

@@ -0,0 +1,116 @@
+Displays information about the current SwayNC state such as notification count and DnD.
+Clicking the widget opens the SwayNC panel.
+
+[!Notifications widget in its closed state showing 3 notifications](https://f.jstanger.dev/github/ironbar/notifications.png)
+
+> ![NOTE]
+> This widget requires the [SwayNC](https://github.com/ErikReider/SwayNotificationCenter) 
+> daemon to be running to use.
+
+## Configuration
+
+> Type: `notifications`
+
+| Name                | Type      | Default | Description                                                                                            |
+|---------------------|-----------|---------|--------------------------------------------------------------------------------------------------------|
+| `show_count`        | `boolean` | `true`  | Whether to show the current notification count.                                                        |
+| `icons.closed_none` | `string`  | `󰍥`    | Icon to show when the panel is closed, with no notifications.                                          |
+| `icons.closed_some` | `string`  | `󱥂`    | Icon to show when the panel is closed, with notifications.                                             |
+| `icons.closed_dnd`  | `string`  | `󱅯`    | Icon to show when the panel is closed, with DnD enabled. Takes higher priority than count-based icons. |
+| `icons.open_none`   | `string`  | `󰍡`    | Icon to show when the panel is open, with no notifications.                                            |
+| `icons.open_some`   | `string`  | `󱥁`    | Icon to show when the panel is open, with notifications.                                               |
+| `icons.open_dnd`    | `string`  | `󱅮`    | Icon to show when the panel is open, with DnD enabled. Takes higher priority than count-based icons.   |
+
+
+<details>
+<summary>JSON</summary>
+
+```json
+{
+  "end": [
+    {
+      "type": "notifications",
+      "show_count": true,
+      "icons": {
+        "closed_none": "󰍥",
+        "closed_some": "󱥂",
+        "closed_dnd": "󱅯",
+        "open_none": "󰍡",
+        "open_some": "󱥁",
+        "open_dnd": "󱅮"
+      }
+    }
+  ]
+}
+```
+
+</details>
+
+<details>
+<summary>TOML</summary>
+
+```toml
+[[end]]
+type = "notifications"
+show_count = true
+
+[[end.icons]]
+closed_none = "󰍥"
+closed_some = "󱥂"
+closed_dnd = "󱅯"
+open_none = "󰍡"
+open_some = "󱥁"
+open_dnd = "󱅮"
+```
+
+</details>
+
+<details>
+<summary>YAML</summary>
+
+```yaml
+end:
+  - type: notifications
+    show_count: true
+    icons:
+      closed_none: 󰍥
+      closed_some: 󱥂
+      closed_dnd: 󱅯
+      open_none: 󰍡
+      open_some: 󱥁
+      open_dnd: 󱅮
+```
+
+</details>
+
+<details>
+<summary>Corn</summary>
+
+```corn
+{
+  end = [
+    {
+      type = "notifications"
+      show_count = true
+
+      icons.closed_none = "󰍥"
+      icons.closed_some = "󱥂"
+      icons.closed_dnd = "󱅯"
+      icons.open_none = "󰍡"
+      icons.open_some = "󱥁"
+      icons.open_dnd = "󱅮"
+    }
+  ]
+}
+```
+
+</details>
+
+## Styling
+
+| Selector                | Description                           |
+|-------------------------|---------------------------------------|
+| `.notifications`        | Notifications widget button           |
+| `.notifications .count` | Notifications count indicator overlay |
+
+For more information on styling, please see the [styling guide](styling-guide).