feat: adding MessageSystemAttributeNames

[nicholasgriffintn]

Resolves #515

Description:

This adds the ability to provide MessageSystemAttributeNames for SQS, it will be passed from options to SQS.

More information is available on the docs: https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-sqs/Interface/ReceiveMessageCommandInput/

Type of change:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Why is this change required?:

Because we didn't have it yet

[github-actions]

LCOV of commit d4bdb7a during Comment PR Coverage #33

Summary coverage rate:
  lines......: 98.0% (876 of 894 lines)
  functions..: 100.0% (34 of 34 functions)
  branches...: 94.2% (162 of 172 branches)

Files changed coverage rate:
                   |Lines       |Functions  |Branches    
  Filename         |Rate     Num|Rate    Num|Rate     Num
  =======================================================
  src/consumer.ts  |97.6%    634| 100%    21|93.8%    128