* feat: #26107 uplink discounts for traitors and nukies
* refactor: #26107 extracted discount label from price of StoreListingControl
* refactor: minor renaming
* refactor: parametrized adding discounts to uplink store
* fix: #26107 prevent exception on empty discountOptions
* feat: uplink now have 'Discounted' category which contains all discounted items on this session.
* after merge fixups
* rename discount categories according to common sense
* refactor: DiscountOptions is now optional (nullable) on ListingData
* add nullability check ignore for already checked listingData.DiscountOptions
* fix after merge store menu ui
* remove unused using
* final fix after merge conflicts
* [refactor]: #26107 fix variables naming in UplinkSystem
* fix: #26107 fix after merge
* refactor: #26107 now supports discountDownUntil on ListingItem, instead of % of discount
* feat: #26107 support multiple currency discount in store on side of discount message label
* refactor: #26107 extracted discounts initialization to separate system. StoreDiscountData are spread as array and not list now
* refactor: #26107 move more code from storesystem to StoreDiscountComponent
* refactor: #26107 separated StoreSystem and StoreDiscountSystem using events
* fix: #26107 placed not-nullable variable initialization in ListingData for tests
* refactor: #26107 minor renaming, xml-docs
* fix: #26107 changed most of discounts to be down to half price for balance purposes
* ids used in with discounts are now ProtoIds, dicountCategories are now prototypes, code with weights simplified
* decoupled storesystem and store discount system
* xml-docs
* refactor: #26107 xml-doc for StoreDiscountSystem
* is now a thing (tmp)
* fix: compilation errors + StoreDiscountData.DiscountCategoryId
* refactor: rename ListingDataWithCostModifiers, fix all cost related code, enpittyfy performance, uglify uplink_catalog
* refactor: removed unused code, more StoreDiscountSystem docs, simplify code
* refactor: moved discount category logic to respective system, now creating ListingData c-tor clones all mutable fields as expected
* refactor: rename back (its not prototype)
* refactor: move ListingItemsInitializingEvent to file with handling logic
* refactor: comments for StoreBuyFinishedEvent handling, more logging
* refactor: moved StoreInitializedEvent, xml-doc
* refactor: simplify StoreDiscountSystem code (reduce nesting) + xml-doc
* refactor: restore old listing data cost field name
* refactor: fix linter in uplink_catalog.yml
* refactor: xml-doc for ListingDataWithCostModifiers
* refactor: limit usage of ListingData in favour of ListingDataWithCostModifiers
* refactor: purged linq, removed custom datafield names, minor cleanup
* refactor: removed double-allocation on getting available listings
* refactor: StoreSystem.OnBuyRequest now uses component.FullListingsCatalog as reference point (as it was in original code)
* fix: minor discount categories on uplink items changes following design overview
* refactor: StoreBuyListingMessage now uses protoId and not whole object
* refactor: store refund and discount integration test, RefreshAllListings now translates previous cost modifiers to refreshed list, if state previous to refresh had any listing items
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Co-authored-by: pa.pecherskij <pa.pecherskij@interfax.ru>
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