Add table type to disambiguate spec and reference

[regadas]

Fixes #1859

[codecov]

Codecov Report

Merging #1866 into master will decrease coverage by 2.27%.
The diff coverage is 25.92%.

@@            Coverage Diff             @@
##           master    #1866      +/-   ##
==========================================
- Coverage   71.93%   69.65%   -2.28%     
==========================================
  Files         195      195              
  Lines        5953     5959       +6     
  Branches      326      346      +20     
==========================================
- Hits         4282     4151     -131     
- Misses       1671     1808     +137

Impacted Files	Coverage Δ
...cala/com/spotify/scio/bigquery/BigQueryTypes.scala	68.29% <ø> (ø)	⬆️
...n/scala/com/spotify/scio/bigquery/BigQueryIO.scala	21.37% <23.8%> (-2.44%)	⬇️
...otify/scio/bigquery/syntax/ScioContextSyntax.scala	50% <33.33%> (+3.84%)	⬆️
.../spotify/scio/bigquery/client/BigQueryConfig.scala	0% <0%> (-70.59%)	⬇️
...scala/com/spotify/scio/bigquery/client/Cache.scala	0% <0%> (-66.67%)	⬇️
.../spotify/scio/bigquery/BigQueryPartitionUtil.scala	0% <0%> (-58.98%)	⬇️
...scala/com/spotify/scio/bigquery/BigQueryUtil.scala	50% <0%> (-50%)	⬇️
...la/com/spotify/scio/bigquery/client/QueryOps.scala	0.82% <0%> (-47.11%)	⬇️
...com/spotify/scio/bigquery/types/BigQueryType.scala	36.84% <0%> (-21.06%)	⬇️
...la/com/spotify/scio/bigquery/client/TableOps.scala	0% <0%> (-19.77%)	⬇️
... and 5 more

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[jto]

The changes in formating in BigQueryIO make it hard to review the pull request.
Can you not mix reformating with actual changes ?

Also how come the formating changes anyway ? Scalafmt should take care of that automatically.

[jto]

👍