refactor!: support RUB only (WealthLedger/main#55)

Filter non-RUB data at ingest, collapse per-currency collections into single RUB Money, drop currency from TbankPortfolioValuePoint, remove NON_RUB_ACTIVITY and screener currency filter.

BREAKING CHANGE: per-currency API fields replaced with single RUB Money; stock screener currency param removed.

src/modules/investments/instruments/stocks/domain/stock-screener-selection.rules.ts

@@ -7,7 +7,6 @@ export type StockScreenerCatalog = {
 
 export type StockScreenerConditions = {
   countryOfRisk?: string;
-  currency?: string;
   maxLot?: number;
   query?: string;
   realExchange?: string;
@@ -76,12 +75,7 @@ function matches(
   ) {
     return false;
   }
-  if (
-    conditions.currency !== undefined &&
-    instrument.currency !== conditions.currency
-  ) {
-    return false;
-  }
+  if (instrument.currency?.toUpperCase() !== 'RUB') return false;
   if (
     conditions.realExchange !== undefined &&
     instrument.realExchange !== conditions.realExchange