Add telemetry events backend for collab (#8220)

Send telemetry to collab not zed.dev

Release Notes:

- N/A

---------

Co-authored-by: Marshall <marshall@zed.dev>
Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>

crates/collab/.env.toml

@@ -12,6 +12,12 @@ BLOB_STORE_SECRET_KEY = "the-blob-store-secret-key"
 BLOB_STORE_BUCKET = "the-extensions-bucket"
 BLOB_STORE_URL = "http://127.0.0.1:9000"
 BLOB_STORE_REGION = "the-region"
+ZED_CLIENT_CHECKSUM_SEED = "development-client-checksum-seed"
+
+CLICKHOUSE_URL = "http://localhost:8123"
+CLICKHOUSE_USER = ""
+CLICKHOUSE_PASSWORD = ""
+CLICKHOUSE_DATABASE = "zed"
 
 # RUST_LOG=info
 # LOG_JSON=true