[ULX-1599] feat: add get/update template partials to PromptsManager

[joel-hamilton]

Changes

This PR adds support for get/update template partials to PromptsManager. This is related to our EA Custom Prompts feature.

References

ULX-1599

Testing

• This change adds unit test coverage
• This change adds integration test coverage

To test locally,

• pull these changes and create a node-auth0 link

npm run build && yarn link

• make another project that requires node-auth0, and link it to the local copy:

mkdir temp && \
cd temp && \
npm init -y && \
npm i auth0 && \
npm link auth0 && \
<<EOF >> index.js
const ManagementClient = require("auth0").ManagementClient;
const assert = require("node:assert/strict");

const data = {
  login: { "form-content-end": "<div>TEST</div>" }
};

var management = new ManagementClient({
  domain: process.env.AUTH0_DOMAIN,
  token: process.env.API2_TOKEN,
});

async function test() {
  const putRes = await management.prompts.updateTemplatePartialsByPrompt(
    { prompt: "login" },
    data
  );
  assert(JSON.stringify(putRes.data) === JSON.stringify(data));

  const getRes = await management.prompts.getTemplatePartialsByPrompt({ prompt: "login" });
  assert(JSON.stringify(getRes.data) === JSON.stringify(data));
}

test();

EOF

• run it

export AUTH0_DOMAIN="test-tenant.eu.auth0.com"
export API2_TOKEN="ey..."
node ./index.js

Checklist

• I have read the Auth0 general contribution guidelines
• I have read the Auth0 Code of Conduct
• All existing and new tests complete without errors