Add MAINTAINERS file

[t-fine]

Similar to the anax repo we should add a MAINTAINERS file for the examples repo. Anax repo maintainers file:
https://github.com/open-horizon/anax/blob/master/MAINTAINERS.md

[marhabac33]

@t-fine I can work on this.

Let me know if the maintainers are same as the anax repo. If not then whom to include.

[johnwalicki]

@marhabac33 - it will be a slightly different list

[marhabac33]

@johnwalicki same list plus @t-fine or need other changes.

[t-fine]

Hey @marhabac33 sorry I started a reply yesterday and something came up ... let's make it me, John, Joe, and Lily for now. Thanks!

[marhabac33]

No worries at all @t-fine.
I have other's email addresses from anax file. Could you please share your preferred email to include?

[t-fine]

@marhabac33 oh yes! Mine is: [email protected]

[marhabac33]

@t-fine #604 is up

[t-fine]

@marhabac33 thanks for the help!