[WIP] Implement widget functionality

[brionmario]

Purpose

Related Issues

• N/A

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 (ec558ad) to head (60041bf).
Report is 1 commits behind head on new-signup.

Additional details and impacted files

@@               Coverage Diff               @@
##           new-signup    #7121       +/-   ##
===============================================
+ Coverage            0   32.02%   +32.02%     
===============================================
  Files               0       41       +41     
  Lines               0      893      +893     
  Branches            0      204      +204     
===============================================
+ Hits                0      286      +286     
- Misses              0      607      +607     

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

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see 41 files with indirect coverage changes