protocols/kad: Add From impl for kbucket::Key (#1909)

- From<record::Key>
- From<Vec<u8>

This will enable to use additional types in kad.get_closest_peers as it was
possible in pre 0.33 version.

Co-authored-by: Max Inden <mail@max-inden.de>

protocols/kad/src/kbucket/key.rs

@@ -24,6 +24,7 @@ use sha2::{Digest, Sha256};
 use sha2::digest::generic_array::{GenericArray, typenum::U32};
 use std::borrow::Borrow;
 use std::hash::{Hash, Hasher};
+use crate::record;
 
 construct_uint! {
     /// 256-bit unsigned integer.
@@ -111,6 +112,18 @@ impl From<PeerId> for Key<PeerId> {
     }
 }
 
+impl From<Vec<u8>> for Key<Vec<u8>> {
+    fn from(b: Vec<u8>) -> Self {
+        Key::new(b)
+    }
+}
+
+impl From<record::Key> for Key<record::Key> {
+    fn from(k: record::Key) -> Self {
+        Key::new(k)
+    }
+}
+
 impl<T> AsRef<KeyBytes> for Key<T> {
     fn as_ref(&self) -> &KeyBytes {
         &self.bytes