feat: refactor the settings page architecture

app/Cargo.toml

@@ -0,0 +1,37 @@
+[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"
+async-channel = "1.8.0"
+bytecheck = "0.6.10"
+color-eyre = "0.6.2"
+cosmic-settings-page = { path = "../page" }
+cosmic-settings-system = { path = "../pages/system" }
+cosmic-settings-time = { path = "../pages/time" }
+derive_setters = "0.1.5"
+dirs = "4.0.0"
+generator = "0.7.4"
+i18n-embed-fl = "0.6.6"
+libcosmic = {workspace = true}
+once_cell = "1.17.1"
+regex = "1.8.1"
+rkyv = { version = "0.7.41", features = ["validation"]}
+rust-embed = "6.6.1"
+slotmap = "1.0.6"
+tokio = "1.27.0"
+downcast-rs = "1.2.0"
+
+[dependencies.i18n-embed]
+version = "0.13.8"
+features = ["fluent-system", "desktop-requester"]
+
+[profile.release]
+opt-level = "s"
+overflow-checks = true
+lto = "thin"
+incremental = false