Add a search icon to search boxes of lists

[Klumbumbus]

Search (filter) boxes for lists are a bit inconspicuous. I personally discovered the search box in the Tags/Membershp panel only after using JOSM for years :D (see also #19537)

A little search icon in the text box which disappears when you enter text would be helpful. Like this:

Attached is the icon, self creted, PD and CC0 licensed.

Searchboxes for lists I found so far:

• Tags/Mambership panel
• Relations panel
• Notes panel
• Search by preset in Search window
• Search by preset in Filter window
• Search for objects by preset
• Search preset
• Search menu items
• Your saved queries in Download from Overpass API in Download window
• Colors in Preferences
• Plugins in Preferences
• Shortcuts in Preferences
• Standard Imageries in Preferences
• Advanced preferences in Preferences
• Projections by epsg code in Preferences
• Mappaint styles in Preferences
• Presets in Preferences

Some already have a "Search:" text in front of the search box but that takes too much space in smaller windows or panels.

[Klumbumbus]

(+Notes Panel from #20583)

[skyper]

+1, yes, please, I guess many miss this feature without an indication.

I also thought about a clear option and why not a history? At least relation panel seems to delete filters after some actions.

[simon04]

In 17768/josm:

fix #19645 - Add a search icon to search boxes of lists (icon by Klumbumbus, PD and CC0 licensed)

[Klumbumbus]

Great, thank you!