Refactor time info, update zobrist to tuple struct, naming and clippy

src/search/transposition_table.rs

@@ -17,15 +17,15 @@ impl TranspositionTable {
     pub fn lookup(&self, zobrist_hash: ZobristHash) -> Option<&TTEntry> {
         let entry = self
             .positions
-            .get((zobrist_hash.hash % self.size) as usize)
+            .get((zobrist_hash.0 % self.size) as usize)
             .and_then(|entry| entry.as_ref());
 
         entry
     }
 
     pub fn insert(&mut self, tt_entry: TTEntry) {
-        let index = (tt_entry.hash.hash % self.size) as usize;
-        self.positions[index] = Some(tt_entry);
+        let idx = (tt_entry.hash.0 % self.size) as usize;
+        self.positions[idx] = Some(tt_entry);
     }
 }