[add] cpal as a dependency and implement the actual device enumeration + audio streams.

Author: vmarcella

Cargo.lock

@@ -22,6 +22,7 @@ obj-rs = "=0.7.4"
 wgpu = { version = "=28.0.0", optional = true, features = ["wgsl", "spirv"] }
 pollster = { version = "=0.4.0", optional = true }
 lambda-rs-logging = { path = "../lambda-rs-logging", version = "2023.1.30" }
+cpal = { version = "=0.17.1", optional = true }
 
 # Force windows crate to 0.62 to unify wgpu-hal and gpu-allocator dependencies.
 # Both crates support this version range, but Cargo may resolve to different
@@ -55,4 +56,4 @@ wgpu-with-gl = ["wgpu", "wgpu/webgl"]
 audio = ["audio-device"]
 
 # Granular feature flags (disabled by default)
-audio-device = []
+audio-device = ["dep:cpal"]