Add desktop widgets and streamline documentation

Cargo.lock

@@ -1602,6 +1602,8 @@ name = "ferese-core"
 version = "0.1.0"
 dependencies = [
  "ferese-layout",
+ "jiff",
+ "serde",
 ]
 
 [[package]]
@@ -1646,12 +1648,16 @@ dependencies = [
 name = "ferese-shell"
 version = "0.1.0"
 dependencies = [
+ "ferese-core",
  "ferese-protocols",
  "iced_accessibility",
  "jiff",
  "libcosmic",
  "serde",
+ "tempfile",
+ "tokio",
  "toml 0.9.12+spec-1.1.0",
+ "toml_edit",
  "wayland-client",
 ]