🚧 [WIP][NEW SIGNUP] Add base for widgets

[brionmario]

Purpose

Related Issues

• Provide support to orchestrate the business user registration product-is#21562

Related PRs

• N/A

Checklist

• e2e cypress tests locally verified. (for internal contributers)
• Manual test round performed and verified.
• UX/UI review done on the final implementation.
• Documentation provided. (Add links if there are any)
• Relevant backend changes deployed and verified
• Unit tests provided. (Add links if there are any)
• Integration tests provided. (Add links if there are any)

Security checks

• Followed secure coding standards in http://wso2.com/technical-reports/wso2-secure-engineering-guidelines
• Ran FindSecurityBugs plugin and verified report
• Confirmed that this PR doesn't commit any keys, passwords, tokens, usernames, or other secrets

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 32.02%. Comparing base (3956034) to head (55209a4).
Report is 1 commits behind head on new-signup.

Additional details and impacted files

@@             Coverage Diff             @@
##           new-signup    #7252   +/-   ##
===========================================
  Coverage       32.02%   32.02%           
===========================================
  Files              41       41           
  Lines             893      893           
  Branches          220      215    -5     
===========================================
  Hits              286      286           
+ Misses            587      557   -30     
- Partials           20       50   +30     

Flag	Coverage Δ
@wso2is/core	32.02% <ø> (ø)

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see 8 files with indirect coverage changes