PR: Add PR labeler configuration & size workflow

[AAYUSH-SPIDEY-SHARMA]

I added:

• .github/labeler.yml (path-based label rules)
• .github/workflows/labeler.yml (applies path-based labels via actions/labeler)
• .github/workflows/label-size.yml (applies size/* labels based on changed file count)
• .github/workflows/create-labels.yml ( please run this to create the label names)

Maintainer steps (one-click):

1. Go to Actions → Create / Update Labels (maintainer-trigger) and click Run workflow to create labels required by the labeler.
2. After the labels workflow completes, retrigger label workflows on this PR (push an empty commit: git commit --allow-empty -m "retrigger label workflows" && git push) or edit the PR title.
3. Confirm labels applied in the PR sidebar.

If you prefer to run on your machine:

• Run: chmod +x scripts/create-labels.sh && ./scripts/create-labels.sh (requires gh CLI).

Thanks! LMK if you want me to change label names/colors or reduce the label set. fixes #1082

[jbampton]

I can see that I need to first manually create the labels.

Otherwise looks interesting so far

[jbampton]

run prettier.............................................................Failed

• hook id: prettier
• files were modified by this hook