feat: update npm plugin error types and add plugin startup spinner phase

Signed-off-by: jlanson <[email protected]>

hipcheck/src/session/mod.rs

@@ -395,7 +395,13 @@ fn setup_base_session(
 
 	let executor = ExecConfig::get_plugin_executor(&exec_config)?;
 
+	// Start plugins and display as such to users
+	let phase = SpinnerPhase::start("starting plugins");
+	phase.inc();
+	phase.enable_steady_tick(Duration::from_millis(100));
 	let core = start_plugins(&policy, &plugin_cache, executor)?;
+	phase.finish_successful();
+
 	session_builder.set_core(core);
 
 	Ok(session_builder)

plugins/npm/src/main.rs

@@ -101,7 +101,12 @@ impl Plugin for DependenciesPlugin {
 	const NAME: &'static str = "npm";
 
 	fn set_config(&self, _config: Value) -> std::result::Result<(), ConfigError> {
-		Ok(())
+		match get_npm_version() {
+			Err(_) => Err(ConfigError::MissingProgram {
+				program_name: "npm".to_owned(),
+			}),
+			Ok(_) => Ok(()),
+		}
 	}
 
 	fn default_policy_expr(&self) -> hipcheck_sdk::prelude::Result<String> {