Implement bad connections baseline reset functionality

- Added a new field `badConnBaseline` in the `Handler` struct to store the baseline for bad connections.
- Updated the `BuildIncidents` function to utilize the effective bad connections count for incident generation.
- Introduced a new API endpoint `/api/agg/bad-connections/reset` to reset the bad connections baseline.
- Enhanced the frontend with a button to trigger the reset action, providing user feedback through toast notifications.
- Updated Svelte components to handle the reset functionality and display appropriate messages based on the operation's success or failure.

internal/server/gateway.go

@@ -308,6 +308,10 @@ func (g *Gateway) serve(w http.ResponseWriter, r *http.Request) {
 		proxy.NormalizeRequestURLPath(r)
 	}
 	const prefix = "/api/"
+	if r.Method == http.MethodPost && r.URL.Path == "/api/agg/bad-connections/reset" {
+		g.agg.HandleResetBadConnectionsBaseline(w, r)
+		return
+	}
 	if r.URL.Path == "/api/agg" || strings.HasPrefix(r.URL.Path, "/api/agg/") {
 		g.agg.ServeHTTP(w, r)
 		return