Upload crashes to collab directly (#8649)

This lets us run rustc_demangle on the backtrace, which helps the Slack
view significantly.

We're also now uploading files to digital ocean's S3 equivalent (with a
1 month expiry) instead of to Slack.

This PR paves the way for (but does not yet implement) sending this data
to clickhouse too.

Release Notes:

- N/A

crates/zed/src/main.rs

@@ -807,7 +807,7 @@ async fn upload_previous_crashes(
         .unwrap_or("zed-2024-01-17-221900.ips".to_string()); // don't upload old crash reports from before we had this.
     let mut uploaded = last_uploaded.clone();
 
-    let crash_report_url = http.build_url("/api/crash");
+    let crash_report_url = http.build_zed_api_url("/telemetry/crashes");
 
     for dir in [&*CRASHES_DIR, &*CRASHES_RETIRED_DIR] {
         let mut children = smol::fs::read_dir(&dir).await?;