docs(readme): add pkg-docs link feat markdown enhancement

[danielhe4rt]

---

Here's some small improvements to the README.md file, where I just managed to enhance some small point which was point to pkg-go docs.

Why I made this change?

I'm quite new to Golang and still learning about the environment yet. As expected from our Drivers, I tried to find our Sphinx Docs with more specifications with no luck.

Documentation Enhancements:

• Added a centered header and badges for build status, documentation, and protocol specs to improve the visual appeal and accessibility of important links.
• Introduced a table of contents to help users navigate through the document more easily.
• Reformatted section headers and added sub-sections for better clarity and organization.
• Included a new "Contributing" section to guide users on how to contribute to the project.

[danielhe4rt]

@annastuchlik @sylwiaszunejko please, review.

[danielhe4rt]

@dkropachev did some soft reset without the identation changes.

[dkropachev]

@danielhe4rt , thanks

[annastuchlik]

@danielhe4rt Great, thanks Daniel.