OL crowding read loop selection

[PaulJKim]

Summary of changes

Asana Ticket: 🟠🧑‍🤝‍🧑🔊 Interrupt Read Loop Selection Logic

This PR adds logic for whether crowding data should be read out with an "Approaching" announcement, an "Arriving" announcement" or not at all.

[github-actions]

Coverage of commit 5f38c89

Summary coverage rate:
  lines......: 76.1% (1947 of 2559 lines)
  functions..: 76.9% (520 of 676 functions)
  branches...: no data found

Files changed coverage rate:
                                                             |Lines       |Functions  |Branches    
  Filename                                                   |Rate     Num|Rate    Num|Rate     Num
  =================================================================================================
  lib/content/audio/approaching.ex                           |70.4%     27| 100%     7|    -      0
  lib/content/audio/predictions.ex                           |98.1%     52| 100%     1|    -      0
  lib/content/audio/train_is_arriving.ex                     |48.4%     31| 100%     5|    -      0
  lib/content/message/predictions.ex                         |63.6%    107|66.7%    15|    -      0
  lib/engine/locations.ex                                    |61.5%     52|69.2%    13|    -      0
  lib/locations/location.ex                                  |50.0%      2| 100%     2|    -      0
  lib/signs/realtime.ex                                      |94.8%     58|90.9%    11|    -      0
  lib/signs/utilities/audio.ex                               |90.4%     83| 100%     7|    -      0

Download coverage report

[github-actions]

Coverage of commit a036bbb

Summary coverage rate:
  lines......: 75.6% (1912 of 2529 lines)
  functions..: 77.0% (518 of 673 functions)
  branches...: no data found

Files changed coverage rate:
                                                             |Lines       |Functions  |Branches    
  Filename                                                   |Rate     Num|Rate    Num|Rate     Num
  =================================================================================================
  lib/signs/realtime.ex                                      |94.0%     50|90.0%    10|    -      0
  lib/signs/utilities/audio.ex                               |91.1%     90| 100%     8|    -      0

Download coverage report

[github-actions]

Coverage of commit 9346ac7

Summary coverage rate:
  lines......: 75.6% (1911 of 2528 lines)
  functions..: 77.0% (518 of 673 functions)
  branches...: no data found

Files changed coverage rate:
                                                             |Lines       |Functions  |Branches    
  Filename                                                   |Rate     Num|Rate    Num|Rate     Num
  =================================================================================================
  lib/signs/realtime.ex                                      |94.0%     50|90.0%    10|    -      0
  lib/signs/utilities/audio.ex                               |91.1%     90| 100%     8|    -      0

Download coverage report

[panentheos]

Looks good!