Switch manifest for LineageOS Redvelvetcake

Patching

Basic:

• Repopick topics icosa-bt-r, nvidia-shieldtech-r, nvidia-beyonder-r, and nvidia-nvgpu-r off Lineage Gerrit
• Repopick commits 308972 and 304329 off Lineage Gerrit
• Apply all patches to their respective directories (from patches folder)

Products

• icosa_sr: Standard tablet Android with Nvidia enhancements, based on LineageOS
• icosa_tv_sr: Android TV with Nvidia enhancements, based on LineageOS

Notes

• In progress--may not boot