Fix FindTable to handle dot-separated path elements (#235)

When using backtick-quoted fully qualified table names like
`project.dataset.table`, ZetaSQL may parse the entire string as a
single path element rather than splitting it into three separate
elements. This causes FindTable to fail when looking up tables that
were created with such paths.

This change adds a fallback that normalizes the path by splitting
dot-separated elements when the initial lookup fails. This allows
DROP TABLE to work correctly for tables created with fully qualified
backtick-quoted names.

Support create table as select with column list (#214)

[Date] [Datetime] [Timestamp] Handle `QUARTER`, `WEEK(DAY)`, `ISOWEEK` (

#204)

* [Date] [Datetime] [Timestamp] Handle `QUARTER`, `WEEK(DAY)`, `ISOWEEK`

* Update function_date.go

[String] Do not cast integer/float-like strings to datetime (#184)

[String] Cast to INT64 should use base-10 parsing (#159)

* [String] Cast to INT64 should use base-10 parsing

* refix 0x

* invert

Update dependencies (#129)

* update deps

* update deps

Update dependencies (#127)

* update dependencies

* update go.mod

Fix issue with passing parameters to a multiple statements SQL query (#…

…119)

Care INFORMATION_SCHEMA (#118)

Support SetMaxNamePath API (#117)