Aea

- Adds CLI functionality to add connections
- Multiple additional minor fixes and changes

- Adds Jenkins for CI
- Adds docker develop image
- Parses dependencies of connections/protocols/skills on the fly
- Adds validations of configuration files
- Adds first two working skills and fixes gym examples
- Adds docs
- Multiple additional minor fixes and changes

- Adds AEA CLI tool.
- Adds AEA skills framework.
- Introduces static typing checks across AEA, using `Mypy`.
- Extends gym example

- Provides examples and fixes.

- Initial release of the package.