CMSIS pack manager: add STM32WB15CCUx

Values from Keil.STM32WBxx_DFP.1.2.0.pack
https://www.keil.com/dd2/pack/

Author: jeromecoutant

tools/arm_pack_manager/index.json

@@ -480223,6 +480223,71 @@
         ],
         "sub_family": "STM32WL55"
       },
+      "STM32WB15CCUx": {
+        "name": "STM32WB15CCUx",
+        "memories": {
+          "IROM1": {
+            "access": {
+              "read": true,
+              "write": false,
+              "execute": true,
+              "peripheral": false,
+              "secure": false,
+              "non_secure": false,
+              "non_secure_callable": false
+            },
+            "start": 134217728,
+            "size": 327680,
+            "startup": true,
+            "default": true
+          },
+          "IRAM1": {
+            "access": {
+              "read": true,
+              "write": true,
+              "execute": false,
+              "peripheral": false,
+              "secure": false,
+              "non_secure": false,
+              "non_secure_callable": false
+            },
+            "start": 536870912,
+            "size": 49152,
+            "startup": false,
+            "default": true
+          }
+        },
+        "algorithms": [
+          {
+            "file_name": "CMSIS/Flash/STM32WB_M4.FLM",
+            "start": 134217728,
+            "size": 1048576,
+            "default": true,
+            "ram_start": null,
+            "ram_size": null
+          }
+        ],
+        "processor": {
+          "Symmetric": {
+            "units": 1,
+            "core": "CortexM4",
+            "fpu": "SinglePrecision",
+            "mpu": "Present"
+          }
+        },
+        "from_pack": {
+          "vendor": "Keil",
+          "pack": "STM32WBxx_DFP",
+          "version": "1.2.0",
+          "url": "http://www.keil.com/pack"
+        },
+        "sectors" : [
+            [ 134217728, 4096 ]
+        ],
+        "vendor": "STMicroelectronics:13",
+        "family": "STM32WB Series",
+        "sub_family": "STM32WB15"
+    },
     "STM32WB55CCUx": {
         "name": "STM32WB55CCUx",
         "memories": {