feat: sort imports in test files

[dkrutskikh]

Requirements

• Filling out the template is required. Any pull request that does not include enough information to be reviewed in a timely manner may be closed at the maintainers' discretion.
• All new code requires tests to ensure against regressions

Description of the Change

Effective Dart require sort imports in alphabetically order

Alternate Designs

Why Should This Be In Core?

Benefits

Possible Drawbacks

Verification Process

Applicable Issues

[BirjuVachhani]

@dkrutskikh Thank you for opening this PR. Can you take a look at the failing tests please?

[Copilot]

Pull Request Overview

This PR refactors test file generation to sort import statements alphabetically and consolidates import templates.

• Introduces separate templates for test and project imports
• Sorts package import lines before insertion into the test template
• Adds a new placeholder ([TEST_IMPORTS]) and supporting constant

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
lib/src/generation_utils.dart	Builds and sorts import list, replaces single placeholder
lib/src/data/test_template.dart	Replaces hard-coded imports with [TEST_IMPORTS] and adds import templates
lib/src/cli/utils/constants.dart	Adds TEST_IMPORTS placeholder constant

Comments suppressed due to low confidence (3)

lib/src/generation_utils.dart:143

• [nitpick] Consider renaming importsContent to a more descriptive name like sortedImportLines or sortedImports to clarify its purpose.

var importsContent = [

lib/src/generation_utils.dart:149

• Add a unit test that verifies the import lines are correctly sorted alphabetically, guarding against regressions in this new sorting behavior.

]..sort();

lib/src/data/test_template.dart:13

• Remove the leading space before [TEST_IMPORTS] so that generated import statements start at the leftmost column, preventing syntax errors.

 [TEST_IMPORTS]