[Feature Request]: add product walking

[FGU-HASS]

The request

this relates a bit to request #31

if bus/ train number cannot be added yet, can a product type "walking" be added?

Is your feature request related to a problem?

I cannot figure out which bus line (request #31) and thus station is the starting point due to how bahn.de delivers the connection.

Example:
my connection is: start station A - target station B

Bahn.de suggest connection 1 as bus from A to B (good)
but connection 2 suggests walk from station A to station C and take there a different bus to B. And this is the problem, you need to know somehow that the actual connection starts at a different station.

Additional information

No response