feat(r): Add R BigQuery driver wrapper #437

Job	Run time
check (macOS, adbcdrivermanager) / r-check	1m 39s
check (macOS, adbcflightsql) / r-check	2m 17s
check (macOS, adbcbigquery) / r-check	4m 56s
check (macOS, adbcsnowflake) / r-check	2m 20s
check (macOS, adbcsqlite) / r-check	2m 14s
check (macOS, adbcpostgresql) / r-check	2m 6s
check (ubuntu, adbcdrivermanager) / r-check	1m 50s
check (ubuntu, adbcbigquery) / r-check	2m 19s
check (ubuntu, adbcflightsql) / r-check	3m 39s
check (ubuntu, adbcpostgresql) / r-check	2m 38s
check (ubuntu, adbcsnowflake) / r-check	2m 51s
check (ubuntu, adbcsqlite) / r-check	2m 17s
check (windows, adbcbigquery) / r-check	7m 5s
check (windows, adbcdrivermanager) / r-check	3m 19s
check (windows, adbcflightsql) / r-check	6m 53s
check (windows, adbcpostgresql) / r-check	5m 56s
check (windows, adbcsnowflake) / r-check	8m 47s
check (windows, adbcsqlite) / r-check	3m 59s
	1h 7m 5s

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