[FEATURE] Add Support for querying Avro/Protobuf Data in athena-msk Connector

[Jithendar12]

Support for querying Avro and Protobuf data from Amazon MSK.

Prerequisite: Define the Avro/Protobuf Schema in AWS Glue Schema Registry, select Data Format as Avro/Protocol Buffers while defining schema.
Note: Provide Glue Schema Name as MSK Topic Name with same case.
Example avro/protobuf schema in glue :

Avro:

{
  "type": "record",
  "namespace": "ABC_Organization",
  "name": "Employee",
  "fields": [
    {
      "name": "Name",
      "type": "string"
    },
    {
      "name": "Age",
      "type": "int"
    },
    {
      "name": "IsActive",
      "type": "boolean"
    },
    {
      "name": "Balance",
      "type": "double"
    },
    {
      "name": "Rating",
      "type": "float"
    }
  ]
}

Protobuf:

message protobuftest {
  optional string name = 1;
  optional int64 calories = 2;
  optional string colour = 3;
  optional bool isOrganic = 4;
  optional double price = 5;
  optional float weight = 6;
  optional int32 quantity = 7;
}

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[AbdulR3hman]

nit; why copy the comments exactly as is?

There is a difference between the first if condition and the else at the end. maybe it would serve the reader if the comments are clearer;

[Jithendar12]

Hi @AbdulR3hman , removed.

[AbdulR3hman]

@Jithendar12 it seems we can conflicts; if you can rebase and push again it would great; thank you

[Jithendar12]

Hi @AbdulR3hman , rebased and pushed. Thank you