Implement REUSE 3.3 compliance

[Copilot]

Adds copyright and licensing metadata per REUSE Specification 3.3 requirements.

Changes

• License files: Added LICENSES/GPL-3.0-or-later.txt and LICENSES/Apache-2.0.txt
• SPDX headers: Added to all Java source files (23), shell scripts (13), and batch files (4)
• REUSE.toml: Declares licensing for files that cannot embed headers (config files, IDE settings, GitHub workflows, documentation, Gradle wrapper)
• Copyright year: Updated to 2025 for all Project516 copyright notices

Example

Java files now include:

// SPDX-FileCopyrightText: 2025 Project516 <[email protected]>
//
// SPDX-License-Identifier: GPL-3.0-or-later

package io.github.project516.NumberGuessingGame;

Gradle wrapper files retain their original Apache-2.0 license as per upstream requirements.

Repository now passes reuse lint validation (64/64 files compliant).

<issue_title>Reuse compliant</issue_title>
><issue_description>make this https://reuse.software/</issue_description>
>
> ## Comments on the Issue (you are @copilot in this section)
>
>
>
>

• Fixes Reuse compliant #94

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Reuse compliant</issue_title>
<issue_description>make this https://reuse.software/</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Reuse compliant #94

---

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[Project516]

Change copyright to 2025

[Project516]

Change copyright to 2025

@copilot

[Copilot]

Change copyright to 2025

@copilot

Updated copyright year to 2025 in all files (Java, shell scripts, batch files, and REUSE.toml). Repository remains REUSE 3.3 compliant. Commit: e4ca76e