Settings refactor (#38367)

Co-Authored-By: Ben K <ben@zed.dev>
Co-Authored-By: Anthony <anthony@zed.dev>
Co-Authored-By: Mikayla <mikayla@zed.dev>

Release Notes:

- settings: Major internal changes to settings. The primary user-facing
effect is that some settings which did not make sense in project
settings files are no-longer read from there. (For example the inline
blame settings)

---------

Co-authored-by: Ben Kunkle <ben@zed.dev>
Co-authored-by: Mikayla Maki <mikayla.c.maki@gmail.com>
Co-authored-by: Anthony <anthony@zed.dev>

crates/open_ai/src/open_ai.rs

@@ -3,6 +3,7 @@ use futures::{AsyncBufReadExt, AsyncReadExt, StreamExt, io::BufReader, stream::B
 use http_client::{AsyncBody, HttpClient, Method, Request as HttpRequest};
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
+pub use settings::OpenAiReasoningEffort as ReasoningEffort;
 use std::{convert::TryFrom, future::Future};
 use strum::EnumIter;
 
@@ -278,16 +279,6 @@ pub enum ToolChoice {
     Other(ToolDefinition),
 }
 
-#[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
-#[derive(Debug, Serialize, Deserialize, PartialEq, Clone)]
-#[serde(rename_all = "lowercase")]
-pub enum ReasoningEffort {
-    Minimal,
-    Low,
-    Medium,
-    High,
-}
-
 #[derive(Clone, Deserialize, Serialize, Debug)]
 #[serde(tag = "type", rename_all = "snake_case")]
 pub enum ToolDefinition {