ARROW-5173: [Go] handle multiple concatenated record batches

[sbinet]

No description provided.

[sbinet]

needs #4159

[codecov-io]

Codecov Report

Merging #4160 into master will decrease coverage by 26.77%.
The diff coverage is 22.68%.

@@             Coverage Diff             @@
##           master    #4160       +/-   ##
===========================================
- Coverage   87.89%   61.11%   -26.78%     
===========================================
  Files         758       67      -691     
  Lines       92163     4943    -87220     
  Branches     1251        0     -1251     
===========================================
- Hits        81006     3021    -77985     
+ Misses      11040     1810     -9230     
+ Partials      117      112        -5

Impacted Files	Coverage Δ
go/arrow/array/list.go	74.56% <0%> (-12.18%)	⬇️
go/arrow/ipc/file_reader.go	0% <0%> (ø)	⬆️
go/arrow/ipc/metadata.go	0% <0%> (ø)	⬆️
go/arrow/array/struct.go	84.31% <100%> (+11.67%)	⬆️
go/arrow/array/fixedsize_binary.go	73.8% <79.16%> (+5.38%)	⬆️
python/pyarrow/ipc.pxi
cpp/src/arrow/csv/chunker-test.cc
cpp/src/parquet/column_page.h
cpp/src/parquet/bloom_filter-test.cc
cpp/src/arrow/array/builder_decimal.cc
... and 688 more

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[sbinet]

PTAL @stuartcarnie @alexandreyc @nickpoorman

[sbinet]

(the Travis-CI error is unrelated (JDK-9 is acting up?))

[alexandreyc]

Looks like this PR is a subset of #4161

[stuartcarnie]

For building complex CLI interfaces, I'd recommend you look at https://github.com/spf13/cobra. You can then have a single binary:

$ arrow ls ...

$ arrow cat

etc