Use insta and criterion for main integration test and benches respectively.

docker/ci: Separate integration and unit tests and benches jobs.

Add directives to remove db before/after integration tests are performed.

Split start/run/stop phases; add more granular smoketests.

Split main integration tests into units for isolation.

Signed-off-by: Jason Volk <jason@zemos.net>

src/core/Cargo.toml

@@ -114,10 +114,10 @@ url.workspace = true
 nix.workspace = true
 
 [dev-dependencies]
+criterion.workspace = true
 insta.workspace = true
 maplit.workspace = true
 similar.workspace = true
-criterion.workspace = true
 
 [lints]
 workspace = true