Fix issues with LogViewSet JSON data handling and timestamp parsing

[GonzaloMachado]

Fix issues with LogViewSet JSON data handling and timestamp parsing

Addressed problems encountered in LogViewSet related to JSON data handling and timestamp parsing with AM/PM format. This commit resolves the following issues:

• Improved handling of request.body in LogViewSet's create method to prevent RawPostDataException by utilizing DRF's request (request.data) instead of direct access to request.body.
• Enhanced timestamp parsing in Log.parse_log to correctly interpret timestamps containing AM/PM indicators (%p) using datetime.datetime.strptime.

Testing Scenario:

• Tested LogViewSet endpoint functionality to ensure proper handling of incoming JSON data and accurate timestamp parsing.

Details:

• Adjusted LogViewSet.create to align with Django and DRF conventions for handling request data.
• Updated Log.parse_log to include %p in the format string for parsing timestamps accurately.

This commit addresses issue #34

[patroqueeet]

lgtm.

@NachE @alexandernst good to merge for you?

[NachE]

This PR looks good for me