Indexers Speed-ups: Implement LRU Caching and Incremental Updates #248

Job	Run time
default	17s
features (electrum)	46s
no-default	18s
features (esplora)	28s
platforms (ubuntu-22.04)	46s
features (mempool)	28s
platforms (ubuntu-latest)	46s
platforms (macos-13)	2m 8s
features (fs)	25s
platforms (macos-latest)	1m 1s
features (cli)	46s
platforms (windows-2019)	2m 45s
features (clap)	36s
platforms (windows-latest)	1m 26s
features (log)	28s
features (client-side-validation)	32s
toolchains (nightly)	51s
features (strict-encoding)	27s
toolchains (beta)	54s
toolchains (stable)	50s
toolchains (1.76.0)	55s
	17m 53s

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