Update list of sponsors

[IlCallo]

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You can mention unclear or missing information, typos, grammatical mistakes, etc.
Any contributions and suggestions are welcome!

Check the updated list of sponsors and add the latest newcomers to the logo grid

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Landing

[IlCallo]

https://github.com/rstoenescu is the sponsor list up to date right now? If not, can you send Nick or me the updated sponsor list?

[IlCallo]

Just noticed there's this file too, which seems out of sync: https://github.com/quasarframework/quasar/blob/dev/backers.md

Currently we have sponsors in these pages:

• https://quasar.beget.it/
• https://quasar.beget.it/sponsors-and-backers
• https://github.com/quasarframework/quasar/blob/dev/README.md
• https://github.com/quasarframework/quasar/blob/dev/backers.md

We need to align all of them properly