Tweaks and small refresh to the site

[jorys-paulin]

This pull request includes a lot of small changes and tweaks for the Moonlight website, including:

• Fixing HTML structure errors, like orphan tags
• Adding the Microsoft Store badge as a local resource
• Compressing images, reducing their size by half most of the time
• Removing and fixing download links that don't work anymore, including those covered by fix: update links for moonlight-embedded #24, fix: link to Sunshine instead of Nvidia Shield #25 and Removing dead link to GameStream page #26
• Rewriting parts of the intro text and features, like mentioning other options for Internet streaming

I'm also working on adding a "Compatible hosts" section under the client downloads, here is how it currently looks:

[ReenigneArcher]

This should probably link to our docs or readme as not all packages are available from GitHub releases, such as Flatpak/Flathub, Fedora, homebrew, and pacman. And it's not really clear how to install or setup things by looking at the releases.

https://github.com/LizardByte/Sunshine/blob/master/README.md

OR

https://docs.lizardbyte.dev/projects/sunshine/en/latest/

... or even better yet to our Sunshine product page https://app.lizardbyte.dev/Sunshine, which has all relevant links (docs and downloads). (Flathub being added in LizardByte/Sunshine#3366)