Add S3 support in r-arrow

[program--]

jsinghm/r-arrow currently builds with the following capabilities:

Capabilities:
               
dataset    TRUE
parquet    TRUE
s3        FALSE
utf8proc   TRUE
re2        TRUE
snappy     TRUE
gzip       TRUE
brotli    FALSE
zstd       TRUE
lz4        TRUE
lz4_frame  TRUE
lzo       FALSE
bz2        TRUE
jemalloc   TRUE
mimalloc  FALSE

Need to modify the Dockerfile to build s3 support as well. This will be done by adding another builder phase to build https://github.com/aws/aws-sdk-cpp from source, then build the Apache Arrow C++ libraries.