add missing vitamins, minor tweak to peristaltic pump

This compiles, try:
`$ cargo run -- --repo ../modular-recipes/recipes/ peristaltic_pump`

modular-recipes/recipes/purchase/bearing_624.toml

@@ -0,0 +1,14 @@
+[outputs.bearing_624]
+quantity=10
+comments = "13mm OD, 4mm ID, 5mm wide"
+
+[inputs]
+capital={amount="8.99 usd"}
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://www.ebay.com/itm/162442914585"
+]