[WARP] Explicitly create user signature directory on plugin init

Fixes cases where the user signature directory for some reason has not been created, typically the directory will exist as the sigkit runner will also try and create the directory.

Author: emesare

plugins/warp/src/plugin.rs

@@ -119,6 +119,13 @@ fn load_network_container() {
 fn plugin_init() -> bool {
     Logger::new("WARP").with_level(LevelFilter::Debug).init();
 
+    // Create the user signature directory if it does not exist, otherwise we will not be able to write to it.
+    if !user_signature_dir().exists() {
+        if let Err(e) = std::fs::create_dir_all(&user_signature_dir()) {
+            log::error!("Failed to create user signature directory: {}", e);
+        }
+    }
+
     // Register our matcher and plugin settings globally.
     let mut global_bn_settings = Settings::new();
     global_bn_settings.register_group("warp", "WARP");