Add Multiplatform MsgPack community format (#1259)

NOTES:
This library is not complete yet, but first version is released and it is usable for most cases. Further work is planned to support all of MsgPack features as well as allow more configuration.

Author: esensar

formats/README.md

@@ -58,6 +58,14 @@ This library allows serialization and deserialization of objects to and from [Av
 
 Allows serialization and deserialization of objects to and from [BSON](https://docs.mongodb.com/manual/reference/bson-types/).
 
+### MsgPack (Multiplatform)
+
+* GitHub repo: [esensar/kotlinx-serialization-msgpack](https://github.com/esensar/kotlinx-serialization-msgpack)
+* Artifact ID: `com.ensarsarajcic.kotlinx:serialization-msgpack`
+* Platform: all supported platforms
+
+Allows serialization and deserialization of objects to and from [MsgPack](https://msgpack.org/).
+
 ### SharedPreferences
 
 * GitHub repo: [EdwarDDay/serialization.kprefs](https://github.com/EdwarDDay/serialization.kprefs)