Added menu items and images to api

[laasyaaki]

The menu PNGs given by dining are now visible directly on cmueats. The items are all searchable and the locations serving those items will pop up. Search "lavender" for example will result in coffee shops showing up when it previously did not yield any results.

[sentry]

Bug: The menuItemsString field incorrectly returns "" instead of null for missing data, which violates the API's nullable schema definition.
_{Severity: MEDIUM}

Suggested Fix

Change the nullish coalescing operator's fallback value from "" to null to align with the API schema. The line should be updated to menuItemsString: menuData?.menuItemsString ?? null. This ensures the API correctly signals the absence of data to clients.

Prompt for AI Agent

Review the code at the location below. A potential bug has been identified by an AI
agent.
Verify if this is a real issue. If it is, propose a fix; if not, explain why it's not
valid.

Location: src/db/getLocations.ts#L57

Potential issue: The `getLocations` function incorrectly handles null values for the
`menuItemsString` field. It uses the nullish coalescing operator `?? ""` to convert
`null` values from the database into an empty string. However, the API schema explicitly
defines this field as nullable (`t.Nullable(t.String())`), and the data loading pipeline
intentionally stores `null` for missing data. This mismatch breaks the API contract, as
clients expecting `null` to signify "no data" will receive an empty string instead,
potentially leading to incorrect client-side logic.

_{Did we get this right? 👍 / 👎 to inform future reviews.}