feat: settings application architecture

Cargo.toml

@@ -0,0 +1,25 @@
+[package]
+name = "cosmic-settings"
+version = "0.1.0"
+edition = "2021"
+license = "GPL-3.0-only"
+rust-version = "1.65.0"
+
+[dependencies]
+apply = "0.3.0"
+derive_setters = "0.1.5"
+i18n-embed-fl = "0.6.5"
+once_cell = "1.17.0"
+regex = "1.7.1"
+rust-embed = "6.4.2"
+slotmap = "1.0.6"
+
+[dependencies.i18n-embed]
+version = "0.13.8"
+features = ["fluent-system", "desktop-requester"]
+
+[dependencies.libcosmic]
+git = "https://github.com/pop-os/libcosmic"
+branch = "settings-improv"
+default-features = false
+features = ["debug", "winit", "dyrend"]