Update all codec to suspend; added a default ProtocolCryptoContext implementation

libmc-protocol-encrypt/README.md

@@ -0,0 +1,21 @@
+# libmc-protocol-encrypt
+
+This module implemented `ProtocolCryptoContext` and provided a `DefaultProtocolCryptoContext`.
+
+## Get started
+
+> `Sha1`, `RSA1024`, `AES-128-CFB8` from `cryptography-kotlin`(and its based provider).
+> `HTTP Client` from `ktor-client`
+
+> Before start, you need to add a `ktor client engine` for your platform. For JVM, `ktor-client-okhttp`(JVM 1.8+)
+> or `ktor-client-java`(JVM 11+), for Linux, use `ktor-client-curl`, for Windows, use `ktor-client-winhttp`,
+> for Apple, use `ktor-client-darwin`
+
+```kotlin
+fun main() {
+    val cli = createMinecraftClient(
+        // ... other paramater
+        crypto = DefaultProtocolCryptoContext
+    )
+}
+```