docs: update docs with installation steps

[joao-conde]

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Issue	--
Dependencies	--
Decisions	How to include our script was asked thrice by external consultors. This information should be enough.
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[ripe-tobias-bot[bot]]

Woof, Woof!

Thank you @joao-conde for submitting the "docs: update RIPE SDK docs with installation steps" pull request 😎.

Please do not forget to review our internal guidelines:

• Review the code in the PR using a peer 🧑‍🤝‍🧑
• Make sure all the linting process has been executed an passed 👌
• Make sure unit tests are passing ✅
• Ensure that proper code standards are met 📋
• Fill in the PR's summary (issue, dependencies, decisions and GIF)
• Double-check the diff to make sure it's the absolute best solution you can come up with

Engaging in the development process in the best possible way helps it being efficient and fast.

Your friend, Tobias (Platforme's mascot)

[ripe-tobias-bot[bot]]

Woof, Woof!

Oops! @joao-conde you may have to fix some errors:

• Please specify a link to the issue or rationale in the description of the PR ❗️

Please address these issues to continue with the Pull Request merge process.

Your friend, Tobias (Platforme's mascot)