feat: add input sources applet

cosmic-applet-input-sources/src/config.rs

@@ -0,0 +1,15 @@
+use cosmic::cosmic_config::{self, cosmic_config_derive::CosmicConfigEntry, CosmicConfigEntry};
+use cosmic_comp_config::XkbConfig;
+use serde::{Deserialize, Serialize};
+pub const CONFIG_VERSION: u64 = 1;
+#[derive(Clone, CosmicConfigEntry, Debug, Deserialize, Eq, PartialEq, Serialize)]
+pub struct Config {}
+impl Default for Config {
+    fn default() -> Self {
+        Self {}
+    }
+}
+#[derive(Clone, CosmicConfigEntry, Debug, Deserialize, PartialEq, Serialize, Default)]
+pub struct CosmicCompConfig {
+    pub xkb_config: XkbConfig,
+}