feat: Add mangowm keymode plugin (#14)

* feat(mangowm-keymode): init plugin

* docs: update manifest

* chore: filename

* Update plugin.toml

---------

Co-authored-by: Lemmy <studio@quadbyte.net>

mangowm-keymode/README.md

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+# mangowm-keymode
+![mangowm keymode thumbnail](thumbnail.webp)
+**Mangowm Keymode** is a bar widget plugin written for Noctalia (v5) that displays the current keymode from window manager [MANGOWM](https://mangowm.github.io/). It also notifies you when the keymode changes. Notification and bar text are configurable and can be disabled.

mangowm-keymode/keymode.luau

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+local showText = barWidget.getConfig("show_text")
+local notifyChange = barWidget.getConfig("notify_change")
+
+local currentKeymode = "default"
+
+noctalia.runStream("mmsg watch keymode", function(line)
+  local data = noctalia.json.decode(line)
+  if data and data.keymode then
+    if currentKeymode ~= data.keymode then
+      currentKeymode = data.keymode
+      if notifyChange then
+        noctalia.notify("Keymode changed", currentKeymode)
+      end
+    end
+  end
+end)
+
+function update()
+  noctalia.setUpdateInterval(1000)
+  barWidget.setGlyph("keyboard")
+  if showText then
+    barWidget.setText(currentKeymode)
+  else
+    barWidget.setText("")
+  end
+end
+
+function onClick()
+  noctalia.notify("Keymode", currentKeymode)
+end

mangowm-keymode/plugin.toml

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+id           = "gambled23/mangowm-keymode"
+name         = "Mangowm Keymode"
+version      = "1.0.0"
+min_noctalia = "5.0.0"
+author       = "gambled23"
+license = "MIT"
+dependencies = ["mmsg"]
+icon = "keyboard"
+deprecated = false
+description = "Mangowm keymode notifier"
+tags = ["bar", "mangowc"]
+
+[[widget]]
+id    = "mangowm-keymode"
+entry = "keymode.luau"
+
+  [[widget.setting]]
+  key       = "show_text"
+  type      = "bool"
+  label_key = "settings.show_text.label"
+  default   = true
+
+  [[widget.setting]]
+  key       = "notify_change"
+  type      = "bool"
+  label_key = "settings.notify_change.label"
+  default   = true

mangowm-keymode/translations/en.json

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+{
+  "settings.show_text.label": "Show text on bar",
+  "settings.notify_change.label": "Notify change"
+}