feat(r): Add R BigQuery driver wrapper

[paleolimbot]

This PR adds a BigQuery driver wrapper for R. It is basically the same as the FlightSQL wrapper with the addition of one helper function to take care of the auth (in R we have the lovely gargle package and bigrquery which have extensive methods for handling auth in various scenarios).

I don't think we have a way to get credentials into CI yet (but at least we have build/package load coverage for when that happens).

library(adbcdrivermanager)

# Use the driver manager to connect to a database
db <- adbc_database_init(
  adbcbigquery::adbcbigquery(),
  token = bigrquery::bq_token(),
  "adbc.bigquery.sql.project_id" = Sys.getenv("ADBC_BIGQUERY_TEST_PROJECT_ID")
)
con <- adbc_connection_init(db)

con |>
  read_adbc(
    "SELECT zipcode, latitude, longitude
      FROM `bigquery-public-data.utility_us.zipcode_area` LIMIT 10"
  ) |>
  tibble::as_tibble()
#> # A tibble: 10 × 3
#>    zipcode latitude longitude
#>    <chr>      <dbl>     <dbl>
#>  1 96950       15.2     146. 
#>  2 96952       15.0     146. 
#>  3 96951       14.2     145. 
#>  4 96910       13.5     145. 
#>  5 96929       13.6     145. 
#>  6 96921       13.5     145. 
#>  7 96913       13.5     145. 
#>  8 96932       13.5     145. 
#>  9 50012       42.0     -93.6
#> 10 52352       42.3     -91.8

^{Created on 2024-10-09 with reprex v2.1.1}