Insomnia Install page updates

[Guaris]

Jobs to be done (optional)

As a user I want to download Insomnia using the official download link. I want to see that download link from the Insomnia landing page.

Definition of done

• Update the install page to point to the direct links for downloading the correct package.
• Create cards for the different installation options (use the svg's for the operating system) so they can be seen all on one page.
• The CTA on the cards should be the direct link to the package available on the official download page
  

Information

Right now the install page uses a selection of navtabs that link to three very different installation instructions.

We should link to the package directly, and assume users understand how to install packages on their system.

Size

• S (Small). Example: fixing a broken link, updating wording in an FAQ or paragraph