Add xxnetworkfoundation to repositories.json

[rcarback]

Application whitelist

• Whitelist is in a place acting as a first defence against malicious people that want to misuse Flux in order to for example mine cryptocurrencies or distribute illegal or copyrighted material.
• To whitelist an application for Flux, please adjust helpers/repositories.json file by adding your desired whitelist for a specific docker image organisation (recommended), docker image or target a specific tag of an image:
• Valid Examples: runonflux, runonflux/website, runonflux/website:latest, public.ecr.aws/docker/library/hello-world:linux, ghcr.io/handshake-org/hsd

What do you want to Run On Flux?

Please describe what application(s) do you plan to run.

Applications provided by xx network ( https://git.xx.network )

Is your desired application running somewhere already?

Please provide a POC link to application if it is already running somewhere. (optional)

One example: https://alpha.speakeasy.tech

Is your application open source?

Please provide a source code (optional)
Yes -- https://git.xx.network/elixxir/speakeasyweb

Checklist:

• Whitelist of application is only modifying repositories.json file
• repositories.json is still a valid JSON file
• Only whitelists single docker image organisation (one whitelist at a time, more whitelists, more PRs)
• No other whitelist has been deleted
• I agree with ToS https://cdn.runonflux.io/Flux_Terms_of_Service.pdf
• Application follows ToS - Application is not malicious. Application is not a scam. Application does what is meant to do and does not mislead in any way. Application does not do anything illegal. Application is not a mining application (not even bandwidth mining).
• In case application receives multiple reports, behaves maliciously, it will be blacklisted and removed from the network.