create staging website with chrome store wallet

[LuizAsFight]

for all versions

• remove the top-right "Install Wallet" button

wallet.fuel.network:

• the official doc of "Fuel Wallet"
• should not contain link to zip file, instead it can have a link for the staging-wallet and next-wallet

staging-wallet.fuel.network

• this version should be created, we don't have yet
• it should be released when push code to staging branch
• the doc of "Fuel Wallet Development"
• should be able to download the zip file, as-is now, (need to download from staging-... instead of next-...)

next-wallet.fuel.network

• should not have link to chrome store
• should be able to download the zip file, as-is now

[arthurgeron]

@LuizAsFight Branch staging created, we just need to apply branch protection rules to it (e.g. no force-push, no deletion, etc)