Move modals and rename classes to match file names (#1367)

## Launch Checklist

I've created a folder for modals and moved them all inside.
I removed the icons which were small files with no real benefit and
moved the icons to where they were used.
I fixed an issue with the close button position in modal.
I've added missing translation to "Links" in debug modal.

Before: 

<img width="610" height="81" alt="image"
src="https://github.com/user-attachments/assets/dd7520f6-9634-4ff1-a83d-99ceae7c9144"
/>

After:
<img width="610" height="81" alt="image"
src="https://github.com/user-attachments/assets/fe3a2ccf-6c09-42ab-bf6f-dd30d3c68e13"
/>


 - [x] Briefly describe the changes in this PR.
- [x] Include before/after visuals or gifs if this PR includes visual
changes.
 - [ ] Add an entry to `CHANGELOG.md` under the `## main` section.

src/components/App.tsx

@@ -18,12 +18,12 @@ import AppToolbar, { MapState } from './AppToolbar'
 import AppLayout from './AppLayout'
 import MessagePanel from './AppMessagePanel'
 
-import ModalSettings from './ModalSettings'
-import ModalExport from './ModalExport'
-import ModalSources from './ModalSources'
-import ModalOpen from './ModalOpen'
-import ModalShortcuts from './ModalShortcuts'
-import ModalDebug from './ModalDebug'
+import ModalSettings from './modals/ModalSettings'
+import ModalExport from './modals/ModalExport'
+import ModalSources from './modals/ModalSources'
+import ModalOpen from './modals/ModalOpen'
+import ModalShortcuts from './modals/ModalShortcuts'
+import ModalDebug from './modals/ModalDebug'
 
 import {downloadGlyphsMetadata, downloadSpriteMetadata} from '../libs/metadata'
 import style from '../libs/style'