feat: sqlc, nix formatting

server/db/queries/file.sql

@@ -0,0 +1,41 @@
+-- name: GetFile :one
+SELECT
+    id,
+    name,
+    data,
+    user_id
+FROM file
+WHERE
+    id = @id
+    AND
+    user_id = @user_id
+LIMIT 1;
+
+-- name: InsertFile :one
+INSERT INTO file (
+    name,
+    data,
+    user_id
+) VALUES (
+    @name,
+    @data,
+    @user_id
+)
+RETURNING id;
+
+-- name: UpdateFile :exec
+UPDATE file
+SET
+    name = COALESCE(sqlc.narg('name'), name),
+    data = COALESCE(sqlc.narg('data'), data)
+WHERE
+    id = @id
+    AND
+    user_id = @user_id;
+
+-- name: DeleteFile :exec
+DELETE FROM file
+WHERE
+    id = @id
+    AND
+    user_id = @user_id;