Add baltdev@Overstock (#486)

The UI is a little jank right now but I'll probably maybe hopefully get
to making it look better later

mods/baltdev@Overstock/description.md

@@ -0,0 +1,5 @@
+# Overstock
+
+Adds a utility to reroll the shop until a card is found or a money threshold is hit.
+
+Right click the Reroll button to bring up the interface.

mods/baltdev@Overstock/meta.json

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+{
+  "title": "Overstock",
+  "requires-steamodded": true,
+  "requires-talisman": true,
+  "categories": ["Quality of Life"],
+  "author": "baltdev",
+  "repo": "https://github.com/balt-dev/Overstock",
+  "downloadURL": "https://github.com/balt-dev/Overstock/archive/refs/heads/master.zip",
+  "folderName": "Overstock",
+  "version": "1.0.0",
+  "automatic-version-check": true,
+  "last-updated": 0
+}