L5 Metrics Addition:

Added L5 metrics to determine if L5 should be enabled or not.

Test: On device

adb shell dumpsys location

Output:
  Number of CN0 reports: 149
  Top 4 Avg CN0 mean (dB-Hz): 26.100838872410307
  Top 4 Avg CN0 standard deviation (dB-Hz): 1.7702387090734562
  Total number of sv status messages processed: 4202
  Total number of L5 sv status messages processed: 703
  Total number of sv status messages processed, where sv is used in fix: 1979
  Total number of L5 sv status messages processed, where sv is used in fix: 46
  Number of L5 CN0 reports: 97
  L5 Top 4 Avg CN0 mean (dB-Hz): 20.273711379041377
  L5 Top 4 Avg CN0 standard deviation (dB-Hz): 2.632911219511556
  Used-in-fix constellation types: GPS GLONASS GALILEO

Output Logs: https://drive.google.com/drive/folders/1tGEolHWtF92UkJ8lxgFihIzfWLl8ChZK?usp=sharing
Bug: 137575988
Change-Id: Id306d7cc27c9410a5ad73f5a0940c25f8d795686