[chronik-client] Support history, confirmedTxs, unconfirmedTxs for plugins endpoints

Summary:
Depends on D16783

Support endpoints added to chronik in D16708

The test setup script is updated to reflect the change, and tests are added in line with what is confirmed in the setup script.

Test Plan: CI tests

Reviewers: #bitcoin_abc, tobias_ruck

Reviewed By: #bitcoin_abc, tobias_ruck

Subscribers: tobias_ruck, emack

Differential Revision: https://reviews.bitcoinabc.org/D16786