feat: add support for multi-themes (#210)

* chore: update deps

* wip

* add themes

* add matrix theme

* add flexoki and spaceduck themes

* .

* simple theme change function

* .

* respect shadow and radius settings

* add rose pine themes

* toggle theme

crates/theme/src/platform_kind.rs

@@ -1,30 +0,0 @@
-#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy)]
-pub enum PlatformKind {
-    Mac,
-    Linux,
-    Windows,
-}
-
-impl PlatformKind {
-    pub const fn platform() -> Self {
-        if cfg!(any(target_os = "linux", target_os = "freebsd")) {
-            Self::Linux
-        } else if cfg!(target_os = "windows") {
-            Self::Windows
-        } else {
-            Self::Mac
-        }
-    }
-
-    pub fn is_linux(&self) -> bool {
-        matches!(self, Self::Linux)
-    }
-
-    pub fn is_windows(&self) -> bool {
-        matches!(self, Self::Windows)
-    }
-
-    pub fn is_mac(&self) -> bool {
-        matches!(self, Self::Mac)
-    }
-}