apps: enable debug for release builds

This makes stacktraces on panics more useful.
diff --git a/tools/apps/Cargo.toml b/tools/apps/Cargo.toml
index 05b8839..6c9aed0 100644
--- a/tools/apps/Cargo.toml
+++ b/tools/apps/Cargo.toml
@@ -16,7 +16,10 @@
 url = "1"
 log = "0.4"
 ring = "0.16"
-quiche = { path = "../../"}
+quiche = { path = "../../" }
+
+[profile.release]
+debug = true
 
 [lib]
-crate-type = ["lib"]
\ No newline at end of file
+crate-type = ["lib"]