implement Blake2b and Blake2s

src/commonTest/kotlin/com/infendro/hash/blake2/Blake2b-512.kt

@@ -0,0 +1,42 @@
+package com.infendro.hash.blake2
+
+import kotlin.test.Test
+import kotlin.test.assertContentEquals
+import kotlin.test.assertEquals
+
+class `Blake2b-512 Test` {
+    val function = Blake2b(64)
+
+    @Test
+    fun `bytes and block`() {
+        assertEquals(64, function.bytes)
+        assertEquals(512, function.bits)
+        assertEquals(128, function.block)
+    }
+
+    @Test
+    fun `empty bytearray`() {
+        val expected = ubyteArrayOf(
+            0x78U, 0x6aU, 0x02U, 0xf7U,
+            0x42U, 0x01U, 0x59U, 0x03U,
+            0xc6U, 0xc6U, 0xfdU, 0x85U,
+            0x25U, 0x52U, 0xd2U, 0x72U,
+            0x91U, 0x2fU, 0x47U, 0x40U,
+            0xe1U, 0x58U, 0x47U, 0x61U,
+            0x8aU, 0x86U, 0xe2U, 0x17U,
+            0xf7U, 0x1fU, 0x54U, 0x19U,
+            0xd2U, 0x5eU, 0x10U, 0x31U,
+            0xafU, 0xeeU, 0x58U, 0x53U,
+            0x13U, 0x89U, 0x64U, 0x44U,
+            0x93U, 0x4eU, 0xb0U, 0x4bU,
+            0x90U, 0x3aU, 0x68U, 0x5bU,
+            0x14U, 0x48U, 0xb7U, 0x55U,
+            0xd5U, 0x6fU, 0x70U, 0x1aU,
+            0xfeU, 0x9bU, 0xe2U, 0xceU,
+        )
+        val actual = function.hash(
+            UByteArray(0)
+        )
+        assertContentEquals(expected, actual)
+    }
+}