Commit create_all transaction.

[danielballan]

via @kleinhenz in #616

[danielballan]

We call create_all() in one other place, for the catalog database, but that one already has the necessary commit call:

tiled/tiled/catalog/core.py

Lines 28 to 35 in 1369d48

	# Create all tables.
	await connection.run_sync(Base.metadata.create_all)
	if engine.dialect.name == "sqlite":
	# Use write-ahead log mode. This persists across all future connections
	# until/unless manually switched.
	# https://www.sqlite.org/wal.html
	await connection.execute(text("PRAGMA journal_mode=WAL;"))
	await connection.commit()

[dylanmcreynolds]

Looks good.

[kleinhenz]

Thanks!