[CI] Add PR title format checker

[lidavidm]

Describe the enhancement requested

• Either MINOR: or GH-NNN.
• If GH-NNN, check for closing keywords in body and if not present, add them.
• We can validate components too?

[CalvinKirs]

Hi David,
2: Parsing the pr.body can be costly and may have a slightly higher chance of errors, so I’m leaning towards using the GitHub API approach (i.e., using a script to call the relevant API and reading the closingIssuesReferences field). What do you think?

3: Could you provide more details on this?

[lidavidm]

(2): sounds good to me.

(3): We had a convention of writing titles like GH-123: [Release] Update release scripts. Maybe we can parse the [Release] part and validate that it's one of the expected components.