[Feature]: improve stream url validation

[bre4d777]

Problem Statement

while 7a9c83c introduces basic stream validation for some specific sources it can be improved by implementing optional stream validation in the base source plugin

Proposed Solution

something like

fn requires_stream_verification(&self) -> bool {
    false 
   }
async fn verify_stream(&self, identifier: &str) -> bool {
    super::track::fetch_stream_url(&self.client, identifier).await.is_some()
   } 

for each source similar to is_mirror
so the resolver can call the verify stream function everytime a track is resolved is using it (if the requires_stream_verif8cation returns true )

Alternatives Considered

No response

Additional Context

No response