Adding support for prompt=create

[fadidurah]

What
Adding support for prompt=create in MSAL, where user is prompted to create a new account. Requires AzureAD/microsoft-authentication-library-common-for-android#1707.

Example URL:
https://login.microsoftonline.com/d014fd44-d398-4813-a3a9-8cd725f7f356/oauth2/authorize?
client_id=da53de5a-636b-425f-ad57-0f62d6f974c7
&response_type=id_token
&resource=da53de5a-636b-425f-ad57-0f62d6f974c7
&scope=openid
&nonce=default_nonce
&redirect_uri=https://jwt.ms/
&prompt=create

The draft OIDC spec for this is here: https://openid.net/specs/openid-connect-prompt-create-1_0.html

Why
Other MSAL Libraries also adding support: https://identitydivision.visualstudio.com/Engineering/_boards/board/t/Auth%20Client%20-%20Android/Backlog%20items/?workitem=1233365

How
Adding CREATE field to Prompt.java and support for that field.

https://docs.microsoft.com/en-us/azure/active-directory/external-identities/self-service-sign-up-user-flow#:~:text=Enable%20self-service%20sign-up%20for%20your%20tenant,-Before%20you%20can&text=Under%20Azure%20services%2C%20select%20Azure,Select%20Save.

Finish this checklist from MSAL.NET page: AzureAD/microsoft-authentication-library-for-python#356.

• Expose a new Create property in Prompt.
• Wire-up the prompt so that 'prompt=create' is sent to the authorize endpoint when this prompt is used.
• Update the wiki page, or better redirect it to the docs.ms page, which would, however need to be synced
  Update after release
• Update the docs.ms AcquireToken desktop scenario page. We are here https://docs.microsoft.com/en-us/azure/active-directory/develop/scenario-mobile-acquire-token

Test
Tested this end-to-end on local device in a tenant with a specified sign-up user flow. Added some unit tests.

[codecov-commenter]

Codecov Report

Merging #1611 (7efa321) into dev (8c46290) will increase coverage by 0.05%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##                dev    #1611      +/-   ##
============================================
+ Coverage     49.31%   49.37%   +0.05%     
- Complexity      370      372       +2     
============================================
  Files            59       59              
  Lines          2705     2708       +3     
  Branches        333      333              
============================================
+ Hits           1334     1337       +3     
  Misses         1227     1227              
  Partials        144      144              

Impacted Files	Coverage Δ
...ain/java/com/microsoft/identity/client/Prompt.java	84.21% <100.00%> (+2.96%)	⬆️

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[shahzaibj]

Do we have support in Lab Api to test this?

[fadidurah]

Do we have support in Lab Api to test this?

We do not have lab support for this yet. I used a tenantMonkey instance I had made previously to set up sign-up flow and get it working end-to-end.

[shahzaibj]

Do we have support in Lab Api to test this?

We do not have lab support for this yet. I used a tenantMonkey instance I had made previously to set up sign-up flow and get it working end-to-end.

Can you work with the lab team to add test accounts for this in the LAB API?

[fadidurah]

Do we have support in Lab Api to test this?

We do not have lab support for this yet. I used a tenantMonkey instance I had made previously to set up sign-up flow and get it working end-to-end.

Can you work with the lab team to add test accounts for this in the LAB API?

Yes, im reaching out to Ryan on Monday.

[fadidurah]

I reached out to Ryan and they are committing to supporting this in LAB either this quarter or next.