Adapt the indexer endpoints to the mempool project endpoints

[dangershony]

We want to support the same endpoints as the mempool project, the task involves the following

• Check that the mempool indexer endpoints are similar to Falkon, Esplora, and Electrum, we believe they are and we need to get our indexer to be the same, part of this task is to create a new issue comparing all the endpoints of each indexer.
• Create a new controller or controllers on the blockcore indexer that will mimic the same endpoints as mempool exactly
• The new controller will create endpoints that our Angor is using for
• • wallet balance send/receive
• • block endpoints
• • transaction endpoints
• • angor projects
• • angor stats
• The new endpoints will be added to the indexer under a new name and not interfere with the existing endpoints as they are used still