feat: add payment method toggles and new pricing vars

.env.example

@@ -31,20 +31,30 @@ YOOKASSA_PAYMENT_SUBJECT=payment
 # If unset, bot will use polling while YooKassa uses webhooks.
 TELEGRAM_WEBHOOK_BASE_URL=https://webhooks.yourdomain.tld
 
-# Subscription Prices (integer values)
-PRICE_1_MONTH=150
-PRICE_3_MONTHS=300
-PRICE_6_MONTHS=500
-PRICE_12_MONTHS=900
-# Telegram Stars Prices (integer values)
+# Payment Methods
+YOOKASSA_ENABLED=True
+STARS_ENABLED=True
+TRIBUTE_ENABLED=True
+
+# Subscription Options
+1_MONTH_ENABLED=True
+RUB_PRICE_1_MONTH=150
 STARS_PRICE_1_MONTH=0
-STARS_PRICE_3_MONTHS=0
-STARS_PRICE_6_MONTHS=0
-STARS_PRICE_12_MONTHS=0
-# Tribute Payment Links
 TRIBUTE_LINK_1_MONTH=
+
+3_MONTHS_ENABLED=True
+RUB_PRICE_3_MONTHS=300
+STARS_PRICE_3_MONTHS=0
 TRIBUTE_LINK_3_MONTHS=
+
+6_MONTHS_ENABLED=True
+RUB_PRICE_6_MONTHS=500
+STARS_PRICE_6_MONTHS=0
 TRIBUTE_LINK_6_MONTHS=
+
+12_MONTHS_ENABLED=True
+RUB_PRICE_12_MONTHS=900
+STARS_PRICE_12_MONTHS=0
 TRIBUTE_LINK_12_MONTHS=
 # API key for verifying Tribute webhook signatures
 TRIBUTE_API_KEY=