chore: make update-bindings.sh PWD agnostic

Author: GuillaumeLagrange

crates/instrument-hooks-bindings/src/update-bindings.sh

@@ -1,8 +1,11 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-bindgen ../instrument-hooks/includes/core.h \
-  -o bindings.rs \
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+
+bindgen "$SCRIPT_DIR/../../instrument-hooks/includes/core.h" \
+  -o "$SCRIPT_DIR/bindings.rs" \
   --rust-target 1.74 \
   --allowlist-function "instrument_hooks_.*" \
-  --allowlist-var "MARKER_TYPE_.*"
+  --allowlist-var "MARKER_TYPE_.*" \
+  --allowlist-type "instrument_hooks_feature_t"