Add some hash functions

- new: md2, md4, md5, sha384, sha512, xxhash-32, xxhash-64
- put Blake2sp hash stuff back to rar code
- added the hashes to GUI and Explorer Menu code

CPP/7zip/UI/Explorer/ContextMenu.h

@@ -34,12 +34,16 @@ public:
     kCompressToZipEmail,
     kHash_CRC32,
     kHash_CRC64,
+    kHash_XXH32,
+    kHash_XXH64,
+    kHash_MD2,
+    kHash_MD4,
     kHash_MD5,
     kHash_SHA1,
     kHash_SHA256,
+    kHash_SHA384,
+    kHash_SHA512,
     kHash_BLAKE2sp,
-    kHash_XXH32,
-    kHash_XXH64,
     kHash_All
   };