Refactor Activity Page (#710)

- inference handles to store an activity record for all inference endpoints
- add path, status code, and content type to Activities page
- toggle on/off columns no Activities page 
- add configurable capture level for inference endpoints so large binary blobs are not stored in memory
- store captures in compressed binary format

ui-svelte/src/lib/types.ts

@@ -12,15 +12,22 @@ export interface Model {
   aliases?: string[];
 }
 
-export interface Metrics {
-  id: number;
-  timestamp: string;
-  model: string;
+export interface TokenMetrics {
   cache_tokens: number;
   input_tokens: number;
   output_tokens: number;
   prompt_per_second: number;
   tokens_per_second: number;
+}
+
+export interface ActivityLogEntry {
+  id: number;
+  timestamp: string;
+  model: string;
+  req_path: string;
+  resp_content_type: string;
+  resp_status_code: number;
+  tokens: TokenMetrics;
   duration_ms: number;
   has_capture: boolean;
 }