Add Roles and Tool name

This Pull Request implements the following:
* Set `STIX_Header/Information_Source/Tools/Tool/Name` to `ShadowBotnetIP-STIXParser`
* Set `STIX_Header/Information_Source/Contributing_Sources/Source/Role` to `Originating Publisher`
* Set `STIX_Header/Information_Source/Role` to `Format Transformer`
* Updated `.gitignore` to ignore pycharm `.idea` directory

**Note:** Some of the `python-stix` fields are not currently available in a release, but are implemented in our [repository](https://github.com/STIXProject/python-stix)