Support GET for reconciliation requests

[fsteeg]

Internally OpenRefine uses POST with the query data in the request body.

The wiki however describes GET with a queries parameter:

https://github.com/OpenRefine/OpenRefine/wiki/Reconciliation-Service-API#multiple-query-mode

We should probably support both.

[fsteeg]

Required for testing with https://github.com/reconciliation-api/testbench, which is useful e.g. for https://github.com/hbz/lobid-gnd/issues/206.

[fsteeg]

Deployed to test, see: https://test.lobid.org/gnd/reconcile?queries={"q0":{"query":"Twain"}}

To test in the reconciliation service test bench:

• Go to https://reconciliation-api.github.io/testbench
• Click 'Test bench' tab
• Endpoint: https://test.lobid.org/gnd/reconcile
• Name: e.g. Twain
• Click 'Reconcile'

[acka47]

I tested it in the reconciliation service test bench and it worked. +1