add the support of local indexers as the data source of imports and rescans

[kenshin-samourai]

add an optiional addresses indexer module (addrindexrs)

support of the local indexer as the data source

support of a local external electrum server (electrs, electrumx) as the data source

display the history of addresses in the explorer if the addresses indexer or an electrum server is defined as the data source