Initialize nix setup for the repo (#880) #2296

Job	Run time
semanticdb-kotlinc	4m 19s
bazel_aspect	4m 29s
Docker CLI tests (ubuntu-latest)	7m 11s
Tests (ubuntu-latest, 11)	18m 0s
bazel	2m 30s
Maven tests (17)	4m 44s
Maven tests (21)	4m 33s
Tests (ubuntu-latest, 17)	13m 54s
check	6m 52s
Tests (ubuntu-latest, 21)	9m 15s
Maven tests (11)	5m 1s
	1h 20m 48s

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