color output for filter and format fields in buildspec cache

[shahzebsiddiqui]

we should be able to use --color option for the following option

  --helpfilter         Show Filter fields for --filter option for filtering
                       buildspec cache output
  --helpformat         Show Format fields for --format option for formatting
                       buildspec cache output
  --filterfields       Print raw Filter fields for --filter option for
                       filtering builspec cache output
  --formatfields       Print raw Format fields for --format option for
                       formatting builspec cache output

[shahzebsiddiqui]

@JeffreyFG assigning this to you since this is related to #1254