S3 Data Storage (#1)

Using the storage options [here](https://docs.gitea.com/administration/config-cheat-sheet#storage-storage), this commit pushes all packages, avatars, and LFS files to S3.

- Uses AWS S3.
- Frees up storage on EC2 instance, so packages do not eventually steal all of the free space.

Reviewed-on: #1
Co-authored-by: Max <git@maximhutz.me>
Co-committed-by: Max <git@maximhutz.me>

playbooks/fast.yml

@@ -63,6 +63,8 @@
           GITEA__server__SSH_DOMAIN: "{{ full_domain.value }}"
           GITEA__server__DOMAIN: "{{ full_domain.value }}"
           GITEA__server__ROOT_URL: "https://{{ full_domain.value }}/"
+          GITEA__storage__MINIO_ACCESS_KEY_ID: "{{ minio_access_key }}"
+          GITEA__storage__MINIO_SECRET_ACCESS_KEY: "{{ minio_secret_key }}"
         labels:
           docker-volume-backup.stop-during-backup: "true"
         volumes: