Feat: meals API

[mlajkim]

Background

We want to implement meal related app

What's done?

Feat new APIs:

[Nest] 24637  - 09/23/2025, 8:59:11 AM     LOG [RouterExplorer] Mapped {/api/v1/meals, POST} route +0ms
[Nest] 24637  - 09/23/2025, 8:59:11 AM     LOG [RouterExplorer] Mapped {/api/v1/meals, GET} route +0ms
[Nest] 24637  - 09/23/2025, 8:59:11 AM     LOG [RouterExplorer] Mapped {/api/v1/meals/:id, GET} route +1ms
[Nest] 24637  - 09/23/2025, 8:59:11 AM     LOG [RouterExplorer] Mapped {/api/v1/meals/:id, PATCH} route +0ms
[Nest] 24637  - 09/23/2025, 8:59:11 AM     LOG [RouterExplorer] Mapped {/api/v1/meals/:id, DELETE} route +0ms

What are the related PRs?

• TODO: Write links for any related PRs
• TODO: If you think you have none, you may write N/A

What's next?

• TODO: What is the next things to do after this PR is merged?
  • TODO: Not sure how to do it? Use the following PR as a reference: Doc: domain hierarchy docs#115
• TODO: If you think you have none, you can simply leave None or N/A

Checklist Before PR Review

• The following has been handled:
  • Title is checked
  • Background is filled
  • What's done? is filled
  • What are the related PRs? is filled
  • What's next? is filled
  • Draft is set for this PR
  • Assignee is set
  • Labels are set
  • Development is linked if related issue exists

Checklist (Right Before PR Review Request)

• The following has been handled:
  • Final Operation Check is done
  • Mobile View Operation Check is done, if frontend related
  • Make this PR as an open PR
  • Double-check What's done? matches to the actual changes
  • Appropriate ajktown/docs sync pr done if needed

Checklist (Reviewers)

• Review if the following has been handled:
  • Review Code
  • Checklist Before PR Review is correctly handled
  • Checklist (Right Before PR Review Request) is correctly handled
  • Check if there are any other missing TODOs (Checklists) that are not yet listed
  • Check if issue under Development is fully handled if exists
  • Check if appropriate issues are created from What's next?