test(message): Add Fuzzing

[jshlbrd]

Description

• Adds fuzz tests for message

Motivation and Context

OpenSSF was recently deployed for CI and it calls out fuzzing as a gap, so this is a test to check the level of effort required to address that. More info available here:

• https://github.com/brexhq/substation/security/code-scanning/31
• https://go.dev/doc/security/fuzz/

How Has This Been Tested?

N/A

Types of changes

• 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)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.