v1.0.2 Set a better accelerometer threshold and add some other fixes and improvements

Summary of changes

• Include improvements from PR #3 for log messages.
• Set the new accelerometer threshold. This value is based on the road testing performed by Paul Carlin.
• Set the version using api_set_version() to show the correct output when executing the AT+VER=? command.
• Show the polling elapsed time (for RAK1910) in the logs. The idea comes from the 'timer' added in PR #3.

Thanks go to the following RAKstars for their feedback, testing, and active contribution to this release

• @joshuajaharwood (PR #3)
• Paul Carlin
• @philltran (Issue #1)
• r4wk
• tmiklas

NOTE: The previous list is alphabetically ordered, and there is a linked GitHub account if the RAKstar interacted directly within this repo; otherwise, the Discord handle is used.