implement numeric encodings, optimize

src/commonMain/kotlin/com/infendro/encoding/Base64.kt

@@ -1,23 +0,0 @@
-package com.infendro.encoding
-
-object Base64 : Encoding() {
-    private val CHARACTERS = ubyteArrayOf(
-        0x41U, 0x42U, 0x43U, 0x44U, 0x45U, 0x46U, 0x47U, 0x48U,
-        0x49U, 0x4aU, 0x4bU, 0x4cU, 0x4dU, 0x4eU, 0x4fU, 0x50U,
-        0x51U, 0x52U, 0x53U, 0x54U, 0x55U, 0x56U, 0x57U, 0x58U,
-        0x59U, 0x5aU, 0x61U, 0x62U, 0x63U, 0x64U, 0x65U, 0x66U,
-        0x67U, 0x68U, 0x69U, 0x6aU, 0x6bU, 0x6cU, 0x6dU, 0x6eU,
-        0x6fU, 0x70U, 0x71U, 0x72U, 0x73U, 0x74U, 0x75U, 0x76U,
-        0x77U, 0x78U, 0x79U, 0x7aU, 0x30U, 0x31U, 0x32U, 0x33U,
-        0x34U, 0x35U, 0x36U, 0x37U, 0x38U, 0x39U, 0x2bU, 0x2fU,
-    )
-    private const val PADDING: UByte = 0x3dU
-
-    override fun encode(
-        bytes: UByteArray,
-    ) = encode(bytes, CHARACTERS, PADDING)
-
-    override fun decode(
-        bytes: UByteArray,
-    ) = decode(bytes, CHARACTERS, PADDING)
-}