snowflake describe table not supported

[vieux]

Snowflake actually uses the keyword TABLE after DESC[RIBE] and it doesn't seems to be supported at the moment

See https://docs.snowflake.com/en/sql-reference/sql/desc-table

[alamb]

Possibly related: #1156

[vieux]

I did see this PR before opening this issue and I don't believe they are related, after quickly looking at the code, I don't think the current parser supports DESCRIBE TABLE <table>, only DESCRIBE <table>