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"
+]

modular-recipes/recipes/purchase/filament.toml

@@ -0,0 +1,13 @@
+[outputs]
+filament = {amount="1 kg"}
+
+[inputs]
+capital={amount="23.99 usd"}
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://www.hatchbox3d.com/collections/abs-1-75mm/products/3d-abs-1kg1-75-red"
+]

modular-recipes/recipes/purchase/m4_20_shcs.toml

@@ -0,0 +1,13 @@
+[outputs]
+m4_20_shcs = {quantity=100}
+
+[inputs]
+capital={amount="15.49 usd"}
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://www.ebay.com/itm/116208880820?var=416418584796"
+]

modular-recipes/recipes/purchase/m4_25_bhcs.toml

@@ -0,0 +1,13 @@
+[outputs]
+m4_25_bhcs = {quantity=100}
+
+[inputs]
+capital={amount="18.45 usd"}
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://www.ebay.com/itm/116208880863?var=416418791413"
+]

modular-recipes/recipes/purchase/m4_5_shcs.toml

@@ -0,0 +1,13 @@
+[outputs]
+m4_20_shcs = {quantity=100}
+
+[inputs]
+capital={amount="13.65 usd"}
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://www.ebay.com/itm/116208880820?var=416418584787"
+]

modular-recipes/recipes/purchase/m4_nuts.toml

@@ -0,0 +1,13 @@
+[outputs]
+m4_nuts = {quantity=100}
+
+[inputs]
+capital={amount="1.35 usd"}
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://www.ebay.com/itm/116208880811?var=416418360544"
+]

modular-recipes/recipes/purchase/m4_washer.toml

@@ -0,0 +1,14 @@
+[outputs.m4_washer]
+quantity=100
+comments = "4.4 mm ID, 8.8 mm OD, 0.8 mm thick"
+
+[inputs]
+capital={amount="7.18 usd"}
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://www.ebay.com/itm/116208880905?var=416418468720"
+]

modular-recipes/recipes/purchase/purchase_stepper.toml

@@ -1,14 +0,0 @@
-[[outputs]]
-stepper = {type="J8BYJ-48"}
-
-[[inputs]]
-capital={type="usd"}
-
-[[dependencies]]
-operator = {skill="vendor interaction"}
-
-[[action.purchase]]
-retailers = ["https://www.mouser.com/datasheet/2/758/stepd-01-data-sheet-1143075.pdf",
-            "https://components101.com/motors/28byj-48-stepper-motor"]
-
-process = "contact retailer and provide capital in exchange for vitamins. then think about how you can produce those vitamins for your enclave."

modular-recipes/recipes/purchase/silicone_tubing.toml

@@ -0,0 +1,13 @@
+[outputs]
+silicone_tubing = {amount="3 m"}
+
+[inputs]
+capital={amount="18.75 usd"}
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://www.ebay.com/itm/134871649335"
+]

modular-recipes/recipes/purchase/stepper_28byj_48.toml

@@ -0,0 +1,18 @@
+[outputs]
+stepper_28byj_48 = {quantity=1}
+
+[inputs]
+capital={amount="1.35 usd"}
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://www.ebay.com/itm/224283233677"
+]
+
+documentation = [
+    "https://www.mouser.com/datasheet/2/758/stepd-01-data-sheet-1143075.pdf",
+    "https://components101.com/motors/28byj-48-stepper-motor"
+]