Add a form field in the profile section that allows users to customize the initials displayed in their profile avatars.

[Devika008]

Describe the problem you would like to solve
Using initials as avatars adds a personal touch to user profiles, giving them a unique identity without the need for personal photos. This also addresses privacy concerns related to using images. However, some users may prefer to adjust the automatically generated initials to better suit their preferences.

Describe the solution you'd like
Add a form field under User Profile > Identity that lets users customize their initials. They should be able to enter only 2 characters, no more.

[taslangraham]

I've added a PR for this @ewhanson. Please take a look.
pkp-lib - #10639

submodule updates
ojs - pkp/ojs#4533
ops - pkp/ops#818
omp - pkp/omp#1776

There's an avatar component in the UI library currently used to display initials based on the user's name. This would need to be updated, in a separate issue, to accept custom initials

[ewhanson]

Looks good, @taslangraham. Just a few questions in pkp-lib. Once this is merged, feel free to create the issue you mentioned above and update the avatar component as well.

[taslangraham]

@ewhanson Thanks for the review

[taslangraham]

@ewhanson I've made small updates to pkp-lib PR based on your initial feedback. Please take a look.

[ewhanson]

Thanks, @taslangraham! Just one comment, but once you've addressed that, feel free to merge.

[taslangraham]

All merged @ewhanson . Thanks for the review