`.schema` should show views

[Doug Stevenson]

sqlite3 does this, so libsql shell should as well. For example:

$ sqlite3 test.db
sqlite> create table t (t text);
sqlite> create view v (t) as select * from t;
sqlite> .schema
CREATE TABLE t (t text);
CREATE VIEW v (t) as select * from t
/* v(t) */;

sqld needs to allow views to be created: libsql/sqld#563
But I suppose it's possible for someone to import a sqlite3 database file that already has views.