Create a schema diagram for Kebechet

[hemajv]

In #23, we decided to consider Kebechet as an example for outlining the end-end monitoring workflow. We should create a schema/architecture diagram to better describe the application. (The schema creation can also be included as one of the steps in the monitoring guide)

[hemajv]

Schema created here: https://drive.google.com/file/d/1972Ny8BnPgsVUcF85r6qmj_H5AvqnQaa/view?usp=sharing

[fridex]

See also https://chat.google.com/room/AAAAVjnVXFk/25Fl-XcPJc0