Add database migration snapshots for comment_votes, comments, movies, and users tables

- Created 0009_snapshot.json with initial structure for comment_votes, comments, movies, and users tables.
- Created 0010_snapshot.json with updated structure for comments, including new fields: pinned and spoiler.
- Created 0011_snapshot.json with further updates to comments, adding anonymous field and refining existing structures.

server/database/migrations/0011_magenta_jack_flag.sql

@@ -0,0 +1 @@
+ALTER TABLE `comments` ADD `anonymous` boolean DEFAULT false NOT NULL;