create a respositories for raspberrypi3b in sig-devboard

Signed-off-by: Nkeven <likai20@iscas.ac.cn>

sig/sig-devboard/sig_devboard.md

@@ -95,6 +95,7 @@ Note: The content of this SIG follows the convention described in OpenHarmony's
   - talkweb: https://gitee.com/openharmony-sig/devboard_applications_sample_talkweb_niobe
   - talkweb: https://gitee.com/openharmony-sig/devboard_device_talkweb_niobe
   - talkweb: https://gitee.com/openharmony-sig/devboard_vendor_talkweb
+  - raspberrypi : https://gitee.com/openharmony-sig/devboard_vendor_rpi3b
 
 ## SIG Members
 

sig/sig-devboard/sig_devboard_cn.md

@@ -96,6 +96,7 @@
   - talkweb: https://gitee.com/openharmony-sig/devboard_applications_sample_talkweb_niobe
   - talkweb: https://gitee.com/openharmony-sig/devboard_device_talkweb_niobe
   - talkweb: https://gitee.com/openharmony-sig/devboard_vendor_talkweb
+  - raspberrypi : https://gitee.com/openharmony-sig/devboard_vendor_rpi3b
 
 ## SIG组成员
 

sig/sigs.json

@@ -78,7 +78,8 @@
                 "https://gitee.com/openharmony-sig/vendor_huawei_minidisplay_demo",
                 "https://gitee.com/openharmony-sig/devboard_applications_sample_talkweb_niobe",
                 "https://gitee.com/openharmony-sig/devboard_device_talkweb_niobe",
-                "https://gitee.com/openharmony-sig/devboard_vendor_talkweb"
+                "https://gitee.com/openharmony-sig/devboard_vendor_talkweb",
+                "https://gitee.com/openharmony-sig/devboard_vendor_rpi3b"
          ],
          "project-path":[
                 "device/st",
@@ -130,9 +131,10 @@
                 "vendor/huawei/ipcamera_v3s",
                 "vendor/huawei/minidisplay_demo",
                 "vendor/oh_fun",
-				"applications",
-				"device/talkweb/niobe",
-				"vendor/talkweb"
+                "applications",
+                "device/talkweb/niobe",
+                "vendor/talkweb",
+                "vendor/rpi3"
          ]
       },
       {