Rp2

* added Income sheet to plugin ODS template (needed by tax_report_us generator to support the new Income InTransaction type)

* added support for Income-type InTransaction (to capture misc income like Coinbase Earn)
* renamed old unique_id field to internal_id and added a new unique_id field to all transactions, which captures hash for IntraTransactions and exchange-specific unique ids for In/OutTransactions
* updated documentation to reflect latest changes
* minor fixes and refactoring

* Add py.typed to rp2 package to indicate type hint support.

* Added support for multiple logger names (e.g. plugins can use different logger names than core RP2 code).

* refactored to_string() method to be top-level, so that it's easier to use in external projects.
* added [RP2 Ecosystem](https://github.com/eprbell/rp2/tree/main/README.md#rp2-ecosystem) paragraph to README.md
* added a few more FAQs to user frequently asked questions document
* improved CLI description
* minor fixes

* fixed [issue 6](https://github.com/eprbell/rp2/issues/6): OUT transaction fee is now a deduction as per https://www.irs.gov/publications/p544 and https://taxbit.com/cryptocurrency-tax-guide (previously it was considered part of proceeds and therefore taxed)
* restructured User FAQ document
* added several questions to User FAQ document (many of them DeFi-related)
* various edits and improvements throughout entire documentation