Integrate Add-In Manager in Jmp

[hogi]

☑ missing function
☑ could help many users!

☐ removes a „bug“

☐ nice to have

☐ nobody needs it

#myTop10_2022

Add-In Manager is a really great Add-In to manage and distribute Jmp Add-Ins in the company.
Add-In Manager 

Please include it in Jmp and fix some bugs:

- functionality to add and handle Toolbars (not: delete toolbar entries)
https://community.jmp.com/t5/JMP-Add-Ins/Add-In-Manager/tac-p/575008/highlight/true#M1667

- option: "insert after" to place commands after a specific existing command (e.g. self-made plotting command below GraphBuilder)
https://community.jmp.com/t5/JMP-Add-Ins/Add-In-Manager/tac-p/567196/highlight/true#M1646

- add Meta data directory option for TEST - to enable auto-update also for TEST repository:
https://community.jmp.com/t5/JMP-Add-Ins/Add-In-Manager/tac-p/424276/highlight/true#M1379

- provide @Justin_Chilton the bandwidth to work on these topics:

https://community.jmp.com/t5/JMP-Add-Ins/Add-In-Manager/tac-p/452189/highlight/true#M1420

more wishes submitted by  

[Sarah-Sylvestre]

Hi @hogi, thank you for your suggestion! We have captured your request and will take it under consideration.