added caching to all local assemblers

4 jobs for feature/local_basis_cache in 20 minutes and 58 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
passed #6531
debian:10 clang-6-libcpp-17

00:20:57

passed #6530
debian:10 gcc-8-17

00:13:16

passed #6532
debian:9 gcc-6-14

00:11:40

passed #6533
ubuntu:18.04 clang-6-17

00:18:57