clang-tidy + clang-format

Update th_lib.c

Regression used IO Manager timer, not EMON timer.

Non-self-hosted code was out of sync.

When `EE_CFG_SELFHOSTED != 1`, the harness initialized the
the timestamp the wrong way and did not supress all verification
timestamps, which cause failures in both GUI runner programs.

The code has been reverted back to the expected behavior and
validated on the both current versions of (license) GUIs.

* Version 1.0.2.000 energy runner

* Version 1.0.2.001 performance runner

Both GUIs should generate 45 timestamps in both configurations,
`EE_CFG_ENERGY_MODE` set to `0` and `1` with the GUI scripts.

A few tweaks to the readme for wolfSSL

Fixed printf format specifier bug causing fails.

mbed-os on the L476 did not implement the %02x padding specifier.
As a result, leading zeroes were droped and the GUI verification
tests were failing. Instead of implementing a check, the two
key print functions handle the format. They aren't time critical.

First commit.