Add Mila the Highland cow

[nadia5129]

No description provided.

[github-actions]

🧪 PR Validation Results for #26

✅ Check PR is going to correct repo passed!
✅ Check image path passed!
✅ Check image file exists passed!
✅ Check image file size passed!
❌ Image file name in cows/cow-description.json should be based on the cow's name. Expected: images/mila.png or .jpg or .jpeg
✅ Check proper indentation passed!
✅ Check line endings passed!

---

❌ 6/7 passed. Please fix the issues above and update your PR.

[cla-assistant]

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[github-actions]

🧪 PR Validation Results for #26

✅ Check PR is going to correct repo passed!
✅ Check image path passed!
❌ Image file images/highlandcow.png specified in cows/cow-description.json does not exist in the PR.
❌ Image file is too large! Maximum allowed size is 200 KB. Please resize or compress it and update your PR.
❌ Image file name in cows/cow-description.json should be based on the cow's name. Expected: images/mila.png or .jpg or .jpeg
✅ Check proper indentation passed!
✅ Check line endings passed!

---

❌ 4/7 passed. Please fix the issues above and update your PR.

[github-actions]

🧪 PR Validation Results for #26

✅ Check PR is going to correct repo passed!
✅ Check image path passed!
❌ Image file images/highlandcow.png specified in cows/cow-description.json does not exist in the PR.
❌ Image file is too large! Maximum allowed size is 200 KB. Please resize or compress it and update your PR.
❌ Image file name in cows/cow-description.json should be based on the cow's name. Expected: images/mila.png or .jpg or .jpeg
✅ Check proper indentation passed!
✅ Check line endings passed!

---

❌ 4/7 passed. Please fix the issues above and update your PR.

[github-actions]

🧪 PR Validation Results for #26

✅ Check PR is going to correct repo passed!
✅ Check image path passed!
✅ Check image file exists passed!
✅ Check image file size passed!
✅ Check file naming convention passed!
✅ Check proper indentation passed!
✅ Check line endings passed!

---

✅ All tests passed! Nice work on your PR! 🎉