chore: move download and extracting themes to tauri backend

src-tauri/Cargo.lock

@@ -1191,6 +1191,7 @@ dependencies = [
  "byteorder",
  "futures-util",
  "hardware-id",
+ "hex",
  "md5",
  "once_cell",
  "open",
@@ -1199,6 +1200,7 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_repr",
+ "sha1",
  "sysinfo",
  "tauri",
  "tauri-build",
@@ -3710,9 +3712,9 @@ checksum = "7a2d987857b319362043e95f5353c0535c1f58eec5336fdfcf626430af7def58"
 
 [[package]]
 name = "reqwest"
-version = "0.13.3"
+version = "0.13.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "62e0021ea2c22aed41653bc7e1419abb2c97e038ff2c33d0e1309e49a97deec0"
+checksum = "219c5811de6525e5416c7d5d53bb656d3afdbc6c5af816e0802bcfa42dbdc1c3"
 dependencies = [
  "base64 0.22.1",
  "bytes",