Restructure logs

[ThanKarab]

Beautify logs to fit with elk stack
Add log4j2 log handler to add parameters in the logs through env variables.

New log examples:

2024-10-23 15:39:06.897 - INFO  - org.springframework.web.servlet.DispatcherServlet - [dementia] - [portal-backend] - Initializing Servlet 'dispatcherServlet'
2024-10-23 15:39:06.906 - INFO  - org.springframework.web.servlet.DispatcherServlet - [dementia] - [portal-backend] - Completed initialization in 7 ms
2024-10-23 15:43:01.278 - INFO  - hbp.mip.utils.Logger - [dementia] - [portal-backend] - User -> anonymous , Endpoint -> (POST) /experiments , Info -> Request for experiment creation. RequestBody: {"name":"Descriptive analysis","algorithm":{"name":"descriptive_stats","parameters":[{"name":"dataset","value":"dummy_tbi"},{"name":"filter","value":""},{"name":"pathology","value":"tbi:0.1"},{"name":"y","value":"pupil_reactivity_right_eye_result"}],"preprocessing":null}}
2024-10-23 15:43:01.382 - INFO  - hbp.mip.utils.Logger - [dementia] - [portal-backend] - User -> anonymous , Endpoint -> (POST) /experiments , Info -> Experiment created with id: f4f33da5-f862-4e26-ae58-54953631fc7b
2024-10-23 15:43:01.460 - INFO  - hbp.mip.utils.Logger - [dementia] - [portal-backend] - User -> anonymous , Endpoint -> (GET) /experiments/f4f33da5-f862-4e26-ae58-54953631fc7b , Info -> Request for experiment with id: f4f33da5-f862-4e26-ae58-54953631fc7b