Save last chosen filter on "Transaction" page

[ramonwenger]

Describe the solution you'd like
When leaving the Transaction view and later coming back, the transaction filter always resets to "No filter".

I'd like to request for the filter to be saved between page changes, so going from the Transaction view with e.g. "Hide mapped" selected to the Bucket view and then coming back to the Transaction view, the "Hide mapped" filter is still selected.

[ramonwenger]

I could try to write a PR for this, unfortunately although I'm familiar with lots of frontend frameworks I've never worked with Blazor. If anyone could give me a pointer for where to start I'd be grateful.