feat: add notifier to watch upload and attach the File to the Upload

[skjnldsv]

1. The queue reactivity have been fixed
2. Because the reference is now kept, it means the watcher can NOT work as any array change will result in both the old and the new value to point to the same ref and have no differences
3. Therefore we now have the ability to subscribe to those uploads

[codecov]

Codecov Report

Merging #915 (d9db95c) into master (0b60bbb) will decrease coverage by 0.25%.
The diff coverage is 21.42%.

@@            Coverage Diff             @@
##           master     #915      +/-   ##
==========================================
- Coverage   34.89%   34.65%   -0.25%     
==========================================
  Files           6        6              
  Lines         192      202      +10     
  Branches       26       26              
==========================================
+ Hits           67       70       +3     
- Misses        123      130       +7     
  Partials        2        2              

Files Changed	Coverage Δ
lib/uploader.ts	0.00% <0.00%> (ø)
lib/upload.ts	93.61% <75.00%> (+2.50%)	⬆️