[POC] add breakCircularDependency prop to defineFunction

[rtpascual]

Changes

Adds breakCircularDependency (naming can change) to defineFunction props. If this is set to true, splits function into its own stack based on the function's name.

// amplify/auth/resource.ts

export const preSignUp = defineFunction({
   name: 'preSignUp',
   entry: './presignup/handler.ts',
  breakCircularDependency: true,
});

export const randomFunction = defineFunction({
   name: 'randomFunction',
   entry: './randomefunction/handler.ts',
});

export const auth = defineAuth({
   ...
   triggers: { preSignUp },
});

// amplify/backend.ts

export const backend = defineBackend({
  auth,
  data,
  randomFunction,
  preSignUp,
});

const randomFunctionStack = backend.randomFunction.stack; // function stack
const preSignUpStack = backend.preSignUp.stack; // presignup stack

Corresponding docs PR, if applicable:

Validation

Checklist

• If this PR includes a functional change to the runtime behavior of the code, I have added or updated automated test coverage for this change.
• If this PR requires a change to the Project Architecture README, I have included that update in this PR.
• If this PR requires a docs update, I have linked to that docs PR above.
• If this PR modifies E2E tests, makes changes to resource provisioning, or makes SDK calls, I have run the PR checks with the run-e2e label set.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.