Add an Egyptian Arabic (ar_EG) locale

[the-ashraf]

What is the reason for this PR?

Adds an Egyptian Arabic (ar_EG) locale

• Egyptian cities and governorates
• Egyptian first and last names
• Egyptian person national id
• Egyptian company tax id and registation numbers

Author's checklist

• Follow the Contribution Guide

Summary of changes

as shown in the points above, added locale specific names, and national id number as well as company registration info.
and the all tests are passing

Review checklist

• All checks have passed
• Changes are approved by maintainer

[pimjansen]

Please review the contribution guide. Will flag this as needs work until then

[the-ashraf]

Addressed all the failing tasks, hopefully everything passes this time

[the-ashraf]

Okay, since i can't get an expected result from the arabic script based regex assertions, they pass on my local ubuntu machine, pass on a local windows machinem, yet i get conflicted resuts from pcre2 regex testers, and don't pass here. and also since they don't prove anything concise, i decided against proving that arabic text is arabic text.
i elected to remove them. coverage won't be as great. but at least this way i get expected results.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed after 1 week if no further activity occurs. Thank you for your contributions.

[pimjansen]

Please ensure it is properly tested

[the-ashraf]

Like i said, my previous tests (pcre2 regex tests) gave me conflicting results between my local dev machine and here on github. and these tests only proved that Arabic is Arabic, didn't really test something solid. and before that when i took hints from other locales in this library and made similar tests, they were cited to be changed (and rightfully so). don't think i have a valid meaningful way to test that Arabic is Arabic.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed after 1 week if no further activity occurs. Thank you for your contributions.

[pimjansen]

@bram-pkg lgtm so far. Can you do a final check?