chore: Better organize llm provider modules

Author: c12i

crates/stream_pulse/src/lib/llm/mod.rs

@@ -1,3 +1,5 @@
-pub mod openai;
+mod providers;
 pub mod summarizer;
 pub mod transcriber;
+
+pub use providers::openai;

crates/stream_pulse/src/lib/llm/providers/mod.rs

@@ -0,0 +1,2 @@
+pub mod openai;
+pub mod whisper_cpp;

crates/stream_pulse/src/lib/llm/openai.rs …am_pulse/src/lib/llm/providers/openai.rscrates/stream_pulse/src/lib/llm/openai.rs renamed to crates/stream_pulse/src/lib/llm/providers/openai.rs crates/stream_pulse/src/lib/llm/openai.rs renamed to crates/stream_pulse/src/lib/llm/providers/openai.rs

@@ -37,7 +37,7 @@ pub enum OpenAIError {
 }
 
 impl<F: AudioProcessor> OpenAIClient<F> {
-    const SYSTEM_PROMPT: &str = include_str!("./prompts/system_0.txt");
+    const SYSTEM_PROMPT: &str = include_str!("../prompts/system_0.txt");
 
     pub fn new(api_key: impl Into<String>, ffmpeg: F) -> Self {
         let retry_policy = ExponentialBackoff::builder().build_with_max_retries(3);