Add PSyclone generated timing callipers

[jedbakerMO]

Are there any linked Issues or Pull Requests?

#192, MetOffice/lfric_apps#76, Trac/ Svn Apps#928 and Apps#952

Brief description

The PSydata API allows for the automatic generation of (Vernier) timing callipers around kernels, invokes and routines. This should be added as an option for profiling, as well as build options for enabling/ disabling.
This is blocked by #192.

Further details of the issue.

No response