[BOLT] Add threshold options for lite mode

Summary:
Add options for trading processing speed for binary performance.

  -lite-threshold-pct=<uint>
    Threshold (in percent) for selecting functions to process in lite
    mode. Higher threshold means fewer functions to process.
    E.g threshold of 90 means only top 10 percent of functions with
    profile will be processed.

  -lite-threshold-count=<uint>
    Similar to '-lite-threshold-pct' but specify threshold using
    absolute function call count. I.e. limit processing to functions
    executed at least the specified number of times.

  -no-scan
    Do not scan cold functions for external references (may result in
    slower binary).

(cherry picked from FBD24739092)