chore(tvix/clippy): configure clippy allow block_in_conditions

… in Cargo.toml.

This gets an imperative `cargo clippy` run to pick up that config,
so `-A clippy::blocks_in_conditions` doesn't need to be explicitly
specified anymore.

Change-Id: I32b6cc50c77c22cba0d816d0db508c2f94b2c383
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11659
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: edef <edef@edef.eu>
Tested-by: BuildkiteCI

tvix/store/Cargo.toml

@@ -79,3 +79,6 @@ virtiofs = ["tvix-castore/virtiofs"]
 # Requires the following packages in $PATH:
 # cbtemulator, google-cloud-bigtable-tool
 integration = []
+
+[lints]
+workspace = true