Update /about API (parseablehq#705)

add + update about api

1. Add About API for Ingest Servers
2. Update About API Response

```
{
    "version": current_version,
    "uiVersion": ui_version,
    "commit": commit,
    "deploymentId": deployment_id,
    "updateAvailable": update_available,
    "latestVersion": latest_release,
    "llmActive": is_llm_active,
    "llmProvider": llm_provider,
    "oidcActive": is_oidc_active,
    "license": "AGPL-3.0-only",
    "mode": mode,
    "staging": staging,
    "cache": cache_details,
    "grpcPort": grpc_port,
    "store": {
        "type": CONFIG.get_storage_mode_string(),
        "path": store_endpoint
    }
}
```

server/src/handlers/http/about.rs

@@ -20,7 +20,12 @@ use actix_web::web::Json;
 use human_size::SpecificSize;
 use serde_json::json;
 
-use crate::{about, option::CONFIG, storage::StorageMetadata, utils::update};
+use crate::{
+    about,
+    option::{Mode, CONFIG},
+    storage::StorageMetadata,
+    utils::update,
+};
 use std::path::PathBuf;
 
 pub async fn about() -> Json<serde_json::Value> {
@@ -40,11 +45,15 @@ pub async fn about() -> Json<serde_json::Value> {
     let current_version = format!("v{}", current_release.released_version);
     let commit = current_release.commit_hash;
     let deployment_id = meta.deployment_id.to_string();
-    let mode = CONFIG.get_storage_mode_string();
-    let staging = CONFIG.staging_dir();
+    let mode = CONFIG.parseable.mode.to_str();
+    let staging = if CONFIG.parseable.mode == Mode::Query {
+        "".to_string()
+    } else {
+        CONFIG.staging_dir().display().to_string()
+    };
     let grpc_port = CONFIG.parseable.grpc_port;
 
-    let store = CONFIG.storage().get_endpoint();
+    let store_endpoint = CONFIG.storage().get_endpoint();
     let is_llm_active = &CONFIG.parseable.open_ai_key.is_some();
     let llm_provider = is_llm_active.then_some("OpenAI");
     let is_oidc_active = CONFIG.parseable.openid.is_some();
@@ -80,6 +89,9 @@ pub async fn about() -> Json<serde_json::Value> {
         "staging": staging,
         "cache": cache_details,
         "grpcPort": grpc_port,
-        "store": store
+        "store": {
+            "type": CONFIG.get_storage_mode_string(),
+            "path": store_endpoint
+        }
     }))
 }

server/src/handlers/http/modal/ingest_server.rs

@@ -122,7 +122,8 @@ impl IngestServer {
                 web::scope(&base_path())
                     .service(Server::get_query_factory())
                     .service(Server::get_ingest_factory())
-                    .service(Self::logstream_api()),
+                    .service(Self::logstream_api())
+                    .service(Server::get_about_factory()),
             )
             .service(Server::get_liveness_factory())
             .service(Server::get_readiness_factory())