Neto

- Add more suspicious categories to detect pattern recognition code, external connections and possible payments.
- Add suspicious strings to standard output
- Beautify outputs when the program is unable to process an extension because of incorrect extensions
- Fix an error in the storage of the data extracted from entities

- Add user-defined wrappers including a template.py for doing
it.
- Fix an error that occurred when Virustotal API was not
provided.

- Add `neto console` as an interactive way of dealing
with Neto.
- Add some text to the terminal to show some of the data
extracted from the extension. All the data is still
reachable in the generated JSON file, but the most
important features are now printed in the terminal.
- Refactor of the extension plugins: they now can be
written to analyse either unzipped extensions or the zipped
files.
- Add Virustotal assesment
- Add a locally stored configuration folder for different OS
- Add to .gitignore output folder

Hotfix to add a dependency for many Python3 users by adding
werkzeug library.

Some work has been done to make the usage easier for third
parties such as providing a sample JSONRPC client written in
Python. Many other bugfixes and code cleaning.

Amongst the changes:
- Inclusion of a JSONRPC daemon
- Merge of each entry_point into a single util (neto) with
different subcommands.
- Standarization of the modules found inside.