feat(gen2-migration): add additional auth mode config in defineData independent of defaultConfig

[dgandhi62]

Resolves #14484

Summary:

1. This pr detaches additional authorization modes from default authorization modes in the gen2-api. This is because of the intentional design of gen2 which allows this. This removes the need for manual escape hatches.
2. This pr removes wrong properties configured on the interface for additional auth mode
3. This pr adds the interface for authorization modes for Gen1 (it isn't currently used, but for future refactoring)

Documentation:
https://docs.amplify.aws/gen1/android/build-a-backend/graphqlapi/customize-authz-modes/

Tests performed: Unit tests

Input

"authConfig": {
          "additionalAuthenticationProviders": [
            {
              "apiKeyConfig": {
                "apiKeyExpirationDate": "2026-02-18T15:26:24.140Z",
                "apiKeyExpirationDays": 7,
                "description": "graphql"
              },
              "authenticationType": "API_KEY"
            }
          ],
          "defaultAuthentication": {
            "authenticationType": "AMAZON_COGNITO_USER_POOLS",
            "userPoolConfig": {
              "userPoolId": "authapp4fitnesstracker1d5522f41d5522f4"
            }
          }
        },

Output

amplify/data/resource.ts

export const data = defineData({
    migratedAmplifyGen1DynamoDbTableMappings: [{
            //The "branchname" variable needs to be the same as your deployment branch if you want to reuse your Gen1 app tables
            branchName: "fitmain",
            modelNameToTableNameMapping: { WorkoutProgram: "WorkoutProgram-jprmvx2dofhndog6pqece572tm-fitmain", Exercise: "Exercise-jprmvx2dofhndog6pqece572tm-fitmain", Meal: "Meal-jprmvx2dofhndog6pqece572tm-fitmain" }
        }],
    authorizationModes: {
        defaultAuthorizationMode: "userPool",
        apiKeyAuthorizationMode: { expiresInDays: 7, description: "graphql" }
    },
    schema
});

amplify/backend.ts

const cfnGraphqlApi = backend.data.resources.cfnResources.cfnGraphqlApi;
cfnGraphqlApi.additionalAuthenticationProviders = [
    {
        authenticationType: "API_KEY"
    }
];

Instructions for future refactoring the data category code:

1. Use the Gen1 interface as your source of truth defined here - https://github.com/dgandhi62/amplify-cli/blob/661cbac4e3217e1048c90a96de09a3e08f30f76b/packages/amplify-cli/src/commands/gen2-migration/generate/codegen-head/data_definition_fetcher.ts#L11
2. Remove the dependence on this interface completely - https://github.com/aws-amplify/amplify-cli/pull/14496/changes#diff-b3ee254332921ebae0a8518887122bec57915d417f39e2a14aa3f80303aa9b97L7
   and print escape hatches using the Gen1 interface
3. Remove all instances of additionalAuthProvider interface, including this function - https://github.com/dgandhi62/amplify-cli/blob/661cbac4e3217e1048c90a96de09a3e08f30f76b/packages/amplify-cli/src/commands/gen2-migration/generate/codegen-head/data_definition_fetcher.ts#L379
4. Remove all the any typing in the code as seen here - https://github.com/dgandhi62/amplify-cli/blob/661cbac4e3217e1048c90a96de09a3e08f30f76b/packages/amplify-cli/src/commands/gen2-migration/generate/codegen-head/data_definition_fetcher.ts#L459

[iliapolo]

Please update the migration guides of each individual app to remove the now un-necessary manual steps.