add support for org and project official env vars

Author: 64bit

async-openai/README.md

@@ -57,6 +57,8 @@ export OPENAI_API_KEY='sk-...'
 $Env:OPENAI_API_KEY='sk-...'
 ```
 
+Other official enviroment variables supported are: `OPENAI_ADMIN_KEY`, `OPENAI_ORG_ID`, `OPENAI_PROJECT_ID`
+
 - Visit [examples](https://github.com/64bit/async-openai/tree/main/examples) directory on how to use `async-openai`.
 - Visit [docs.rs/async-openai](https://docs.rs/async-openai) for docs.
 

async-openai/src/config.rs

@@ -79,8 +79,8 @@ impl Default for OpenAIConfig {
                 })
                 .unwrap_or_default()
                 .into(),
-            org_id: Default::default(),
-            project_id: Default::default(),
+            org_id: std::env::var("OPENAI_ORG_ID").unwrap_or_default(),
+            project_id: std::env::var("OPENAI_PROJECT_ID").unwrap_or_default(),
             custom_headers: HeaderMap::new(),
         }
     }