Initial API proposal for QoS Booking API

[Masa8106]

What type of PR is this?

Add one of the following kinds:

• enhancement/feature

What this PR does / why we need it:

This is the initial proposal from KDDI for the QoS Booking API

Which issue(s) this PR fixes:

Fixes #4

Special notes for reviewers:

None

Changelog input

 release-note
- Initial version of QoS Booking API

Additional documentation

None

[Masa8106]

So far the initial proposal has been just moved from QoD repository to this repository.
Some editorial correction seems to be required. Please wait for your review for a moment.

[Masa8106]

Have made corrections of the yaml file due to API name change.
Please note that there are some comments in QoD PR #379 which have not resoleve yet.
However, let me ask you to start your review. Thank you.

[eric-murray]

Hi @Masa8106

Parameters startTime, duration and serviceArea should be mandatory for the booking. I don't know how a network could book resources without knowing these parameters.