Move examples yamls to root folder

[zzxwill]

To make example yamls folder in the place consistent in other Crossplane providers

Signed-off-by Zheng Xi Zhou zzxwill@gmail.com

Description of your changes

Fixes #

I have:

• [x] Read and followed Crossplane's contribution process.
• [x] Run make reviewable test to ensure this PR is ready for review.

How has this code been tested

[zzxwill]

LGTM, @zzxwill can you add commit sign off? :)

Done, thanks.