Apply Spotless with new configuration

[gpunto]

Goal

As mentioned in #25, I'm applying spotless in a separate PR

Implementation

Apply spotless

Testing

The check now passes

Checklist

• Issue linked (if any)
• Tests/docs updated
• I have signed the Stream CLA (required for external contributors)

[github-actions]

PR checklist ✅

All required conditions are satisfied:

• Title length is OK (or ignored by label).
• At least one pr: label exists.
• Sections ### Goal, ### Implementation, and ### Testing are filled.

🎉 Great job! This PR is ready for review.

[Copilot]

Pull Request Overview

This PR applies consistent code formatting and style improvements across the codebase, including adding license headers to XML files, standardizing blank line placement after copyright notices, and enforcing trailing comma conventions.

Key Changes:

• Added blank lines after license headers in all Kotlin files for consistency
• Added copyright/license headers to XML resource files (AndroidManifest.xml, layout resources, etc.)
• Added trailing commas to function calls in Gradle build files following Kotlin style conventions

Reviewed Changes

Copilot reviewed 169 out of 169 changed files in this pull request and generated no comments.

File	Description
All Kotlin source/test files	Added blank line after license header (line 16) for consistent spacing
XML resource files (manifest, layouts, values)	Added copyright/license header block
build.gradle.kts files	Added trailing commas to multi-line function calls
MoshiProviderTest.kt	Reformatted JSON string indentation in test case

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud