feat: As a user, I want to be able to call any method on the PortalRegistry via the SDK

[fksyuan]

What does this PR do?

Related ticket

Fixes #204

Type of change

• Chore
• Bug fix
• New feature
• Documentation update

Check list

• Unit tests for any smart contract change
• Contracts and functions are documented

[codecov-commenter]

Codecov Report

Merging #313 (b6d70d9) into dev (01a15b5) will not change coverage.
The diff coverage is n/a.

❗ Current head b6d70d9 differs from pull request most recent head 23bcb96. Consider uploading reports for the commit 23bcb96 to get more accurate results

@@           Coverage Diff           @@
##              dev     #313   +/-   ##
=======================================
  Coverage   93.43%   93.43%           
=======================================
  Files          12       12           
  Lines         198      198           
  Branches       46       46           
=======================================
  Hits          185      185           
  Misses          8        8           
  Partials        5        5           

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