Refactor TimetableItemTag API to use consistent colors

[mannodermaus]

Issue

• close #930

Overview (Required)

• There are now two variants of this component
• The first requires color+icon and is used for the colored 'room' tags
• Any other usage in the app uses the same grayish color and no icon, so expose that as a second variant

Screenshot (Optional if screenshot test is present or unrelated to UI)

Note the subtle change for the gray tags.

Before	After
Incorrect outline color

Before	After
Missing icon, incorrect outline color

Before	After
Incorrect outline color

Before	After
Incorrect outline color

[github-actions[bot]]

Detekt check failed. Please run ./gradlew detekt --auto-correct to fix the issues.

[github-actions[bot]]

Snapshot diff report	File name	Image
KaigiAppTest[KaigiAp p - when app is star ting - it should sho w timetable items]_c ompare.png
FavoritesScreenTest[ FavoritesScreen - wh en server is operati onal - setup many fa vorite sessions - cl ick first session bo okmark - it should d isplay favorite sess ion without first se ssion]_compare.png
FavoriteListPreview_ compare.png
FavoritesScreenTest[ FavoritesScreen - wh en device is tablet - it should show tim etable items]_compar e.png
FavoritesScreenTest[ FavoritesScreen - wh en server is operati onal - setup single favorite session - i t should display fav orite session]_compa re.png
FavoriteSheetPreview _compare.png
FavoritesScreenTest[ FavoritesScreen - wh en server is operati onal - setup many fa vorite sessions - sc roll favorites - it should first session is not displayed]_c ompare.png
FavoritesScreenPrevi ew_compare.png
FavoritesScreenTest[ FavoritesScreen - wh en server is operati onal - setup many fa vorite sessions - it should display favo rite session]_compar e.png
TimetableScreenTest[ TimetableScreen - wh en server is operati onal - it should sho w timetable items]_c ompare.png
TimetableItemDetailH eadlinePreview_compa re.png
TimetableItemDetailS creenPreview_compare .png
TimetableItemDetailS creenTest[TimetableI temDetailScreen - wh en server is operati onal - when font sca le is small - it sho uld show small font session detail]_comp are.png
TimetableScreenTest[ TimetableScreen - wh en device is tablet - it should show tim etable items]_compar e.png
TimetableItemDetailH eadlineWithEnglishPr eview_compare.png
TimetableItemDetailS creenTest.runTest[Ti metableItemDetailScr een - when server is operational - when launch - it should b e appropriately acce ssible]_compare.png
SearchScreenTest[Sea rchScreen - when ser ver is operational - when filter categor y chip click - when click category App A rchitecture en - it should selected cate gory App Architectur e en]_compare.png
SearchScreenTest[Sea rchScreen - when ser ver is operational - when filter day chi p click - when click conference day 2 - it should selected d ay 2]_compare.png
TimetableScreenTest[ TimetableScreen - wh en the current date is 2024-09-12 - it s hould show timetable items for Conferenc eDay1]_compare.png
TimetableItemDetailS creenTest[TimetableI temDetailScreen - wh en server is operati onal - when launch - click bookmark - it should show bookmar ked session]_compare .png
SearchScreenTest[Sea rchScreen - when ser ver is operational - when filter categor y chip click - when click category Other en - it should sele cted category Other en]_compare.png
SearchScreenTest[Sea rchScreen - when ser ver is operational - when filter languag e chip click - when click language MIXED - it should selecte d language MIXED]_co mpare.png
SearchScreenTest[Sea rchScreen - when ser ver is operational - when filter languag e chip click - when click language ENGLI SH - it should selec ted language ENGLISH ]_compare.png
TimetableItemDetailS creenTest[TimetableI temDetailScreen - wh en server is operati onal - when launch - it should show sess ion detail title]_co mpare.png
SearchScreenTest[Sea rchScreen - when ser ver is operational - input search word t o TextField - it sho uld show search word and filtered items] _compare.png
SearchScreenTest[Sea rchScreen - when ser ver is operational - when filter categor y chip click - when click category Jetpa ck Compose en - it s hould selected categ ory Jetpack Compose en]_compare.png
TimetableItemDetailH eadlineWithMixedPrev iew_compare.png
SearchScreenTest[Sea rchScreen - when ser ver is operational - when filter day chi p click - when click conference day 1 - it should selected d ay 1]_compare.png
TimetableScreenTest[ TimetableScreen - wh en server is operati onal - click first s ession bookmark - it should show bookmar ked session]_compare .png
TimetableItemDetailS creenTest[TimetableI temDetailScreen - wh en server is operati onal - when launch - click bookmark - cl ick bookmark again - it should show unBo okmarked session]_co mpare.png
TimetableScreenTest[ TimetableScreen - wh en font scale is lar ge - it should show title in a single li ne]_compare.png
SearchScreenTest[Sea rchScreen - when dev ice is tablet - inpu t search word to Tex tField - it should s how search word and filtered items]_comp are.png
TimetableScreenTest[ TimetableScreen - wh en server is operati onal - scroll timeta ble - it should firs t session is not dis played]_compare.png
TimetableScreenTest[ TimetableScreen - wh en the current date is 2024-09-11 - it s hould show timetable items for Conferenc eDay1]_compare.png
TimetableScreenTest[ TimetableScreen - wh en the current date is 2024-09-13 - it s hould show timetable items for Conferenc eDay2]_compare.png
TimetableScreenTest[ TimetableScreen - wh en server is operati onal - click confere nce day2 tab - it sh ould change displaye d day]_compare.png
SearchScreenTest[Sea rchScreen - when ser ver is operational - when filter languag e chip click - when click language JAPAN ESE - it should sele cted language JAPANE SE]_compare.png