ALVR v16.0.0-rc1

This release is meant for testing. If no problems are reported, it will become v16.0.0.

• v16 protocol updates (by @ckiee, #745)
• Add Fedora Linux packaging (by @Trae32566, #738)
• Add CSS/JS formatting CI (by @ckiee, #737)
• Change dashboard scrollbar style (by @sctanf, #733)
• Various statistics improvements (by @sctanf)
• Adaptive bitrate (by @sctanf, #714)
• Re-add color space and set to Rift S (by @sctanf, #698)
• Fix index controller render models paths (by @korejan, #697)
• Use correct origin for linux pose tracking (by @xytovl, #692)
• Remove experimental dashboard (by @zarik5, #679)
• Cleanup path logic (by @xytovl, #668)
• Add new features for Mixed VR setups (ALVR clients as FBT kits e.g.) (by @korejan, #650)
• Improved Linux support (various changes by @xytovl and @ckiee)