Update to membership tiers (Patreon)

Alongside the reworking of the $13 tier, and after seeing membership spread across tiers, I decided to rework some of the lower tiers. The $1 tier will now give you access to all image packs posted here, and the $3 tier will now give you access to the google drive image gallery. Alongside this the $8 tier will also be getting access to a community chat where future pack teasers of images will be seen, and future teasers for animations will replace the chat that was for the $13 tier. These changes came due to requests from free members and from some who wanted to support but could not afford higher tiers. Hopefully everyone enjoys the changes and this allows for more people to enjoy the content here :).