Updated sqlc files to split out queries by domain.

sql/queries/refresh_tokens.sql

@@ -0,0 +1,16 @@
+-- name: CreateRefreshToken :one
+INSERT INTO refresh_tokens (user_id, token_hash, expires_at)
+VALUES ($1, $2, $3)
+RETURNING *;
+
+-- name: GetRefreshToken :one
+SELECT * FROM refresh_tokens
+WHERE token_hash = $1 LIMIT 1;
+
+-- name: DeleteRefreshToken :exec
+DELETE FROM refresh_tokens
+WHERE token_hash = $1;
+
+-- name: DeleteAllUserRefreshTokens :exec
+DELETE FROM refresh_tokens
+WHERE user_id = $1;