README: Move the installation parts to INSTALLATION.md file

[MithunKinarullathil]

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Issue Description

Currently, README is getting very long with a lot of items. It would be better to move the installation part to an installation.md file and link it in the README. Thanks to @AlexFernandes-MOVAI for the suggestion.

Steps to Reproduce

1. Open the current README

Actual Behaviour

A bit long document where the user can get lost.

Expected Behaviour

Separate files for specific instructions, such as the installation procedure.

Screenshots/GIFs

Versions

• movai-flow: N/A

• movai-ide: N/A

Possible workarounds

Additional Details

• Installed packages: N/A

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