[FEA] Use app configurations to load constants and settings

[amahussein]

Is your feature request related to a problem? Please describe.

It will be nice to refactor the user_tools to use a configuration management.
The configuration file can be loaded from the resources folder but a user can supply modified config file that can be loaded from local disk. For example ~/.pyrapids/conf.{json,yaml..etc}

There are many advantage of use configuration management:

• Easier to alter the behavior with less arguments and less hardcoded values in the code
• We can use environments (production/test/dev) which makes it easier to have enviormnet variables and secrets enabling Integration tests against the CSPs

Describe the solution you'd like

We already have a configuration manager to load some metadata for each tool (i.e., propContainer).
However, for the global app configuration, it will be a plus to use an existing package such as DynaConf because of the following:

• it has a strong community support
• it supports multiple formats
• it supports secrets and environments (dev/test/..etc)
• it supports loading environment variables