add blurhash dependency

Signed-off-by: kernelkind <kernelkind@gmail.com>

Cargo.lock

@@ -770,6 +770,12 @@ dependencies = [
  "piper",
 ]
 
+[[package]]
+name = "blurhash"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e79769241dcd44edf79a732545e8b5cec84c247ac060f5252cd51885d093a8fc"
+
 [[package]]
 name = "built"
 version = "0.7.7"
@@ -3291,6 +3297,7 @@ name = "notedeck_ui"
 version = "0.4.0"
 dependencies = [
  "bitflags 2.9.0",
+ "blurhash",
  "egui",
  "egui_extras",
  "ehttp",