examples/otpinfo_demo Example not compliant

[mbanth]

Issues:

• Convert example to an Application Note
• README missing
• When run on xcore-ai using xrun otpinfo_demo.xe, the example produces no output
• When run on xcore-ai using xrun --io otpinfo_demo.xe or xrun --xscope-io-only otpinfo_demo.xe, the example hangs