Add message option

[nicolocastro89]

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Description

My attempt to address this issue. This PR adds optional inputs to the github action which allows users to specify a success and failure message to post in place of the default one.
The issue mentioned having the label in the message, this makes it a bit more flexible by allowing the label and the message to be added.

Fixes # (issue)

#2656

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

Screenshots/Sandbox (if appropriate/relevant):

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action on it as appropriate

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can
reproduce. Please also list any relevant details for your test configuration

• Unit tests for both messages

Test Environment:

• OS:
• @graphql-inspector/...:
• NodeJS:

Checklist:

• I have followed the
  CONTRIBUTING doc and the
  style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

Further comments

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the solution you did and what alternatives you considered, etc...