feat(wifi-hotspot): add NetworkManager hotspot control plugin (#120)

* feat(wifi-hotspot): add NetworkManager hotspot control plugin

Expose bar toggle, panel, and IPC to start/stop a Wi-Fi hotspot and list connected clients.

* refactor(hotspot): rename plugin directory to hotspot

Align the folder name with the cleboost/hotspot plugin id.

* refactor(hotspot): align plugin id and state keys with hotspot slug

Update manifest id, IPC references, and shared state keys after the directory rename.

hotspot/widget.luau

@@ -0,0 +1,75 @@
+--!nonstrict
+
+local PANEL_ID = "cleboost/hotspot:panel"
+local COMMAND_KEY = "hotspot_command"
+
+local status = noctalia.state.get("hotspot_status") or {
+  active = false,
+  busy = false,
+  available = true,
+  clients = {},
+  clientCount = 0,
+}
+
+local glyph = noctalia.getConfig("glyph") or "router"
+
+local function sendCommand(action)
+  noctalia.state.set(COMMAND_KEY, { action = action })
+end
+
+local function render()
+  if status.available == false then
+    barWidget.setGlyph("wifi-off")
+    barWidget.setGlyphColor("error")
+    barWidget.setTooltip(status.error ~= "" and status.error or noctalia.tr("tooltip.unavailable"))
+  elseif status.busy == true then
+    barWidget.setGlyph("loader-2")
+    barWidget.setGlyphColor("primary")
+    barWidget.setTooltip(noctalia.tr("tooltip.changing"))
+  elseif status.active == true then
+    barWidget.setGlyph(glyph)
+    barWidget.setGlyphColor("tertiary")
+    local count = status.clientCount or #(status.clients or {})
+    barWidget.setText(count > 0 and tostring(count) or "")
+    barWidget.setTooltip(noctalia.tr("tooltip.active", {
+      ssid = status.ssid or "?",
+      count = tostring(count),
+    }))
+  else
+    barWidget.setGlyph(glyph)
+    barWidget.setGlyphColor("on_surface_variant")
+    barWidget.setText("")
+    barWidget.setTooltip(noctalia.tr("tooltip.inactive"))
+  end
+end
+
+noctalia.state.watch("hotspot_status", function(value)
+  if type(value) == "table" then
+    status = value
+    render()
+  end
+end)
+
+render()
+
+function onClick()
+  noctalia.togglePanel(PANEL_ID)
+end
+
+function onRightClick()
+  if status.available == false then
+    noctalia.notifyError(noctalia.tr("title"), status.error or noctalia.tr("error.missing_dependencies"))
+    return
+  end
+  if status.busy == true then return end
+  sendCommand("toggle")
+end
+
+function onMiddleClick()
+  sendCommand("refresh")
+end
+
+function onConfigChanged()
+  glyph = noctalia.getConfig("glyph") or "router"
+  render()
+end