⬆️ ureq v2→v3, add continuous stream detection

- Updateurequest dependency from v2 to latest major (v3.14)
- Add ureq as optional dependency in pmoaudio-ext
- Introduce is_continuous flag to UriSource and PlayerState for proper StreamType handling (Finite vs Continuous)
- Implement detect_continuous_stream() with URL pattern matching and HTTP HEAD header inspection (ICY, chunked encoding)
- Update send_track_boundary() to accept StreamType parameter

Cargo.lock

@@ -3897,6 +3897,7 @@ dependencies = [
  "tokio",
  "tokio-util",
  "tracing",
+ "ureq 2.12.1",
 ]
 
 [[package]]
@@ -4016,7 +4017,7 @@ dependencies = [
  "tracing",
  "tracing-log 0.1.4",
  "tracing-subscriber",
- "ureq",
+ "ureq 3.1.4",
  "url",
  "urlencoding",
  "utoipa",
@@ -6513,6 +6514,22 @@ version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
 
+[[package]]
+name = "ureq"
+version = "2.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "02d1a66277ed75f640d608235660df48c8e3c19f3b4edb6a263315626cc3c01d"
+dependencies = [
+ "base64 0.22.1",
+ "flate2",
+ "log",
+ "once_cell",
+ "rustls",
+ "rustls-pki-types",
+ "url",
+ "webpki-roots 0.26.11",
+]
+
 [[package]]
 name = "ureq"
 version = "3.1.4"
@@ -6527,7 +6544,7 @@ dependencies = [
  "rustls-pki-types",
  "ureq-proto",
  "utf-8",
- "webpki-roots",
+ "webpki-roots 1.0.4",
 ]
 
 [[package]]
@@ -6820,6 +6837,15 @@ dependencies = [
  "libwebp-sys",
 ]
 
+[[package]]
+name = "webpki-roots"
+version = "0.26.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "521bc38abb08001b01866da9f51eb7c5d647a19260e00054a8c7fd5f9e57f7a9"
+dependencies = [
+ "webpki-roots 1.0.4",
+]
+
 [[package]]
 name = "webpki-roots"
 version = "1.0.4"