chore: Add profiling target.

It's not possible to pass RUSTFLAGS through cargo using a profile,
so they must still be passed along with the build command:

RUSTFLAGS="-C force-frame-pointers=y" cargo build --profile profiling

Author: pdeljanov

Cargo.toml

@@ -30,4 +30,11 @@ license = "MPL-2.0"
 license-file = "LICENSE"
 repository = "https://github.com/pdeljanov/Symphonia"
 rust-version = "1.85"
-version = "0.6.0"
+version = "0.6.0"
+
+#cargo-features = ["profile-rustflags"]
+
+[profile.profiling]
+inherits = "release"
+debug = true
+#rustflags = ["-C", "force-frame-pointers=y"]