Text Field - hasMany support

[jmikrut]

We will replicate the functionality that was built into the number field in order to support hasMany: true within text fields.

Everything is already done for the number field, so this should be a pretty straightforward PR for someone to make! Otherwise, we'll get to this as soon as we can.

[Cuzart]

I am going to open a PR after the holidays. I already played around with this and it looks promising but needs some polishing

[Gokulsck]

Hey, @jmikrut @Cuzart I have opened a PR for this. Please check and confirm if it's good and has not missed anything.

https://github.com/payloadcms/payload/pull/4605/files

[maxsynnott]

Just linking my PR comment to this discussion as it's maybe a better place for it.

Currently the documentation and functionality are out of sync