Add an HTTPResponse component

What's Changed

• Setup Github Actions for running tests by @cyb3rd4d in #1
• Write an HTTPResponse component by @cyb3rd4d in #2

Full Changelog: v0.1.2-alpha...v0.1.3-alpha

Add a RequestPayloadExtractor component

Add a request payload extractor

This component allows to extract a request body through a decoder (JSON
or XML by default but you can use what you want) and to validate the
data immediately afterwards.

Add package documentation

v0.1.1-alpha

Add a package documentation

PoC

v0.1.0-alpha

Add doc for each type