move core result into core utils

Signed-off-by: Jason Volk <jason@zemos.net>

src/core/utils/result/log_err.rs

@@ -0,0 +1,24 @@
+use std::fmt::Display;
+
+use tracing::Level;
+
+use super::Result;
+use crate::error;
+
+pub trait LogErr<T, E: Display> {
+	#[must_use]
+	fn err_log(self, level: Level) -> Self;
+
+	#[must_use]
+	fn log_err(self) -> Self
+	where
+		Self: Sized,
+	{
+		self.err_log(Level::ERROR)
+	}
+}
+
+impl<T, E: Display> LogErr<T, E> for Result<T, E> {
+	#[inline]
+	fn err_log(self, level: Level) -> Self { self.inspect_err(|error| error::inspect_log_level(&error, level)) }
+}