ADD: Add new stats type for MWCB

Author: vinilivramento

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 ### Enhancements
 - Added new publisher values for Cboe Titanium Cboe Global Indices Feed
+- Added `StatType` variants `MwcbLevel1`, `MwcbLevel2`, and `MwcbLevel3`
 
 ### Breaking changes
 - Renamed the following Venue, Dataset, and Publisher:

include/databento/enums.hpp

@@ -444,6 +444,15 @@ enum StatType : std::uint16_t {
   // The probable price of the last trade of an instrument published during the trading
   // session. `price` will be set.
   IndicativeClosePrice = 20,
+  // The Market-Wide Circuit Breaker (MWCB) Level 1 threshold (7%), expressed as S&P 500
+  // index points. `price` will be set.
+  MwcbLevel1 = 21,
+  // The Market-Wide Circuit Breaker (MWCB) Level 2 threshold (13%), expressed as S&P
+  // 500 index points. `price` will be set.
+  MwcbLevel2 = 22,
+  // The Market-Wide Circuit Breaker (MWCB) Level 3 threshold (20%), expressed as S&P
+  // 500 index points. `price` will be set.
+  MwcbLevel3 = 23,
   // A venue specific volume statistic. Refer to the venue documentation for more
   // information.
   // `quantity` will be set.

src/enums.cpp

@@ -555,6 +555,15 @@ const char* ToString(StatType stat_type) {
     case StatType::IndicativeClosePrice: {
       return "IndicativeClosePrice";
     }
+    case StatType::MwcbLevel1: {
+      return "MwcbLevel1";
+    }
+    case StatType::MwcbLevel2: {
+      return "MwcbLevel2";
+    }
+    case StatType::MwcbLevel3: {
+      return "MwcbLevel3";
+    }
     case StatType::VenueSpecificVolume1: {
       return "VenueSpecificVolume1";
     }