[BundestagParteispendenBridge] Add bridge to get the latest donations

[mibe]

This bridge gets the latest soft money donations to partys represented in the Bundestag (German parliament).

[somini]

Same comment as #1610, the URI should be the "homepage" of the data. Not exactly sure what would it be here.

LGTM.

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PS: That's some transparency, full names and addresses of entities that donate more than 50k. https://dip21.bundestag.de/dip21/btd/19/190/1919070.pdf. The a regional party accepted foreign donations, from Denmark? I only have rudimentary knowledge of German, was it from the Culture Ministry? Weird.

[mibe]

I used the main list for the URI constant as it is probably a good entry point. I also thought about the page about financing of political parties but that's probably too broad for a bridge about party donations.

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Yeah, the SSW is a minority party of the Danish minority of Southern Schleswig in Germany. It's a bit special. 😉
The two newest donations are also interesting: 100k € in two weeks from the owners of BMW to one of the two currently ruling parties.

[Bockiii]

Works as designed, thanks!