add search field in 'open with' dialog (#1943)

The "Open With" context menu item, which allows you to open a file, now
includes a search option by application name.

Demo:


https://github.com/user-attachments/assets/b4ff5da3-4bdf-4a0f-a20b-b6783f293fef



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i18n/en/cosmic_files.ftl

@@ -293,6 +293,7 @@ unknown-folder = unknown folder
 ## Open with
 menu-open-with = Open with...
 default-app = {$name} (default)
+search-application = Search by app name
 
 ## Show details
 show-details = Show details

i18n/ru/cosmic_files.ftl

@@ -174,6 +174,7 @@ unknown-folder = неизвестная папка
 
 menu-open-with = Открыть с помощью…
 default-app = { $name } (по умолчанию)
+search-application = Поиск по названию приложения
 
 ## Show details