debug: add memory debug window

enable with:

$ cargo build --release --features memory

and then click the memory widget on the chrome sidepanel

currently doesn't track C allocations... we should fix that

Signed-off-by: William Casarin <jb55@jb55.com>

Cargo.toml

@@ -73,6 +73,7 @@ lightning-invoice = "0.33.1"
 secp256k1 = "0.30.0"
 hashbrown = "0.15.2"
 openai-api-rs = "6.0.3"
+re_memory = "0.23.4"
 
 [profile.small]
 inherits = 'release'