Add license tag to all Kotlin files (#282)

[mat-in]

Contributor checklist

• [] This pull request is on a separate branch and not the main branch
• [] I have tested my code with the ./gradlew lintKotlin detekt test command as directed in the testing section of the contributing guide

---

Description

Related issue

• #ISSUE_NUMBER

[github-actions]

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The Scribe team will do our best to address your contribution as soon as we can. The following is a checklist for maintainers to make sure this process goes as well as possible. Feel free to address the points below yourself in further commits if you realize that actions are needed :)

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Maintainer checklist

• The linting and formatting workflows within the PR checks do not indicate new errors in the files changed

• The CHANGELOG has been updated with a description of the changes for the upcoming release and the corresponding issue (if necessary)

[github-actions]

First PR Commit Check

• The commit messages for the remote branch should be checked to make sure the contributor's email is set up correctly so that they receive credit for their contribution
  - The contributor's name and icon in remote commits should be the same as what appears in the PR
  - If there's a mismatch, the contributor needs to make sure that the email they use for GitHub matches what they have for git config user.email in their local Scribe-Android repo (can be set with git config --global user.email "GITHUB_EMAIL")

[mat-in]

Added license tags to all .kt files using bash

[andrewtavis]

Hey @mat-in 👋 Looks like you might have ran your script multiple times. Can we only have the GPL as it is in the .swift file in the issue? Beyond that, it'd be great if we got a short description of what's in the file as the first line of the doc string as is in the .swift file. Would you be able to add those as well?

[mat-in]

/**
 *{ Description}
 *
 * Copyright (C) 2024 Scribe
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

Hello! @andrewtavis
is this the format?

[andrewtavis]

Exactly that, @mat-in :) Feel free to open a new PR or re-open this one with the changes!