chore(Readme): adding guidance for AFPA time management of deep in system project

subjects/devops/deep-in-system/ESTIMATEDTIME.md

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+### Deep-in System time estimate.
+
+This project is to be done by the learner in between 10 and 12 days working days.
+Below are the estimated time for each part of this project.
+
+#### The Virtual Machine Part: 1 day
+#### The Network Part: 1 day
+#### The Security Part: 1-2 days
+#### User Management Part: 1 day
+#### Services Part: 1 day
+#### The Database Part: 2-3 days
+#### WordPress Part: 1 day
+#### Backup Part: 2 days
+
+
+The bonus part time management is up to the student and is not included in this estimate.