[Feature] Remove hardcoded limit of media (#11)

Fixes #7

The limit of upload and remote display media was hard coded to 4.

In this PR, I did the following changes:
- Status form now respects instance's upload limit config.
- Remove the limit of images shown on statuses
    - Remote statuses may have more than local instance's limit

Also, I kept the 16:9 aspect ratio of the images. I can change to more complex layouts in future PRs if needed.

This works, but it needs more tests. I don't have how to change the config of my instance, so I had to test forcing duplicates on the post. Any help to validate configuration would be nice.

![image](/attachments/f073ac59-c6d5-4d4c-a01a-17d0c6855094)

Reviewed-on: https://codeberg.org/superseriousbusiness/masto-fe-standalone/pulls/11
Co-authored-by: Thiago 'Jedi' Cerqueira <thiagoa7@gmail.com>
Co-committed-by: Thiago 'Jedi' Cerqueira <thiagoa7@gmail.com>

app/javascript/flavours/glitch/actions/compose.js

@@ -319,7 +319,7 @@ export function uploadCompose(files) {
     dispatch(uploadComposeRequest());
 
     for (const [i, f] of Array.from(files).entries()) {
-      if (media.size + i > 3) break;
+      if (media.size + i >= uploadLimit) break;
 
       resizeImage(f).then(file => {
         const data = new FormData();