Add parsing for a few more Trade Republic event types

[shukali]

Add parsing for a few more Trade Republic event types

While going through my transaction history I hit a bunch of events that pytr didn't recognize yet, so I added handling for them:

• Incoming securities transfers (SSP_SECURITIES_TRANSFER_INCOMING) now get mapped to a TRANSFER_IN event, including ISIN parsing and a sensible default value.
• A few more events are now explicitly ignored instead of showing up as "unknown": ADDRESS_CHANGED, TRADING_ORDER_REJECTED, the "Neues Gerät" (new device) title, and the "Kauforder abgelehnt" / "Dividende. Cash oder Stockdividende?" subtitles.
• Added support for English-language sections/fields (Transaction, Overview, Fee, Shares), since some accounts seem to return these in English rather than German.

Also added test fixtures + tests for the new cases (address changed, rejected buy order, new device, incoming securities transfer).

[shukali]

Here is an example of the warnings from export_transactions printed before

[MedAzizKhayati]

The transfer evnets should be solved by #308

[shukali]

gotcha. Then I'll probably wait & rebase after yours is merged to include the remaining warnings changes