feat(library): add platform badges, remove hide duplicates

Gitea #34 slice 2 of 3. Core lists each set once now.
The hide duplicates toggle and its param are not needed.
PlatformIcons shows a badge per platform (platforms[]).

src/utils/backlog.test.js

@@ -53,14 +53,6 @@ describe('backlogShare', () => {
     });
 });
 
-describe('libraryQuery hideDuplicates', () => {
-    it('libraryQuery_SetsHideDuplicatesOnlyWhenAsked', () => {
-        const base = {page: 0, size: 20, sort: 'appid,asc', status: null, q: ''};
-        expect(libraryQuery({...base, hideDuplicates: true})).toBe('page=0&size=20&sort=appid%2Casc&hideDuplicates=true');
-        expect(libraryQuery({...base, hideDuplicates: false})).not.toContain('hideDuplicates');
-    });
-});
-
 describe('sources', () => {
     it('parseSources_KeepsKnownValuesInOrder', () => {
         expect(parseSources('PSN,FOO,STEAM,PSN')).toEqual(['STEAM', 'PSN']);