[build] Update package.json to include new module entries for core and bcs

- Added module entries for "./core" and "./bcs" in package.json to support TypeScript types and module imports.
- Configured paths for both ESM and CommonJS formats to enhance module resolution and improve developer experience.

Author: WGB5445

package.json

@@ -24,6 +24,26 @@
         "default": "./dist/esm/index.mjs"
       }
     },
+    "./core": {
+      "types": "./dist/esm/core/index.d.mts",
+      "import": "./dist/esm/core/index.mjs",
+      "require": {
+        "types": "./dist/common/index.d.ts",
+        "default": "./dist/common/index.js"
+      }
+    },
+    "./core/*": {
+      "types": "./dist/esm/core/*.d.mts",
+      "import": "./dist/esm/core/*.mjs"
+    },
+    "./bcs": {
+      "types": "./dist/esm/bcs/index.d.mts",
+      "import": "./dist/esm/bcs/index.mjs",
+      "require": {
+        "types": "./dist/common/index.d.ts",
+        "default": "./dist/common/index.js"
+      }
+    },
     "./dist/common/cli/index.js": "./dist/common/cli/index.js",
     "./dist/esm/cli/index.mjs": "./dist/esm/cli/index.mjs",
     "./package.json": "./package.json"