Add the --memory option to the ".parameter init" CLI command. When present,

Add the --memory option to the ".parameter init" CLI command.  When present,
the --memory option causes the sqlite_parameters table to be created in a
completely independent :memory: database.  This can be done to avoid
parameter binding queries from being affected by debug settings such as
".wheretrace", ".treetrace", "PRAGMA vdbe_addoptrace=on", and similar.

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