feat(corp/data-import): add import of OpenRussian 'words' table

This is actually the lemmata table of this corpus, not the forms of
all words (they're in a separate table).

Change-Id: I89a2c2817ccce840f47406fa2a636f4ed3f49154
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7893
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI

corp/russian/data-import/Cargo.toml

@@ -6,9 +6,11 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+csv = "1.1"
 env_logger = "0.10.0"
 log = "0.4.17"
 rusqlite = "0.28"
+serde = { version = "1.0", features = ["derive"] }
 xml-rs = "0.8"
 
 [profile.release-with-debug]