Moved bit operations out of shared.[hc] and created bitops.[hc]

based on https://github.com/hashcat/hashcat/pull/485/commits/1aafa13e09973568ae58e4a539ce1d7772bd7e0b

include/shared.h

@@ -1400,16 +1400,6 @@ typedef enum kern_run_mp
  * functions
  */
 
-u32 is_power_of_2(u32 v);
-
-u32 rotl32 (const u32 a, const u32 n);
-u32 rotr32 (const u32 a, const u32 n);
-u64 rotl64 (const u64 a, const u64 n);
-u64 rotr64 (const u64 a, const u64 n);
-
-u32 byte_swap_32 (const u32 n);
-u64 byte_swap_64 (const u64 n);
-
 u8  hex_convert (const u8 c);
 u8  hex_to_u8   (const u8 hex[2]);
 u32 hex_to_u32  (const u8 hex[8]);