Feature: Improved performance when creating new files

[ferrariofilippo]

Resolved / Related Issues
Items resolved / related issues by this PR.

• None

Improvements

• I added a service to cache and retrieve item types that are displayed in the AddItem dialog (as suggested by the TODO comment at line 38)
• Thanks to this the AddItem dialog loads almost istantly (except the first time which takes the same as before)
• Caching items is almost 35k times faster than retrieving them from scratch

Validation
How did you test these changes?

• Built and ran the app
• Tested the changes for accessibility

Tests

	Before (ticks):	After (ticks):
1	4_628_610	4_620_084
2	4_607_121	1_270
3	4_370_341	27
4	4_403_786	29
5	4_444_696	25
6	4_557_643	28
7	4_499_437	29
8	4_853_208	31
9	5_106_830	32
10	4_507_856	25
11	4_865_941	34
12	4_415_248	27
13	4_626_534	25
avg	4_606_711	355_512
avg (no 1)		132

[yaira2]

@ferrariofilippo just checking, we already had some basic caching, but this improves it? Can we do the same for the right click menu for folders?

[ferrariofilippo]

@ferrariofilippo just checking, we already had some basic caching, but this improves it? Can we do the same for the right click menu for folders?

Here's a comparison (old on the left and improved on the right). You can see that the first time they take the same time to open, but the second time you open it there's no delay

temp.mp4

[yaira2]

LGTM