Feature: Add Shine/HELL protocol selection to share/transfer host

Add a dedicated ShareHostDlg with a "Use Shine protocol" checkbox (default
checked) so the operator can choose Shine (0) or HELL (1) when sharing or
transferring a host. The chosen protocol is appended to the wire payload as a
trailing colon field: "IP:PORT:0/1" for share and "IP:PORT:days:0/1" for
transfer.

The client parses the trailing field from COMMAND_SHARE and
COMMAND_ASSIGN_MASTER, applies it to new connections, and persists it so
auto-share/auto-transfer on restart keeps the same protocol. Old clients
ignore the extra field, and old/missing payloads fall back to -1 (baked-in
HELL), preserving compatibility with existing servers and share_list entries.

Co-Authored-By: deepseek-v4-pro

server/2015Remote/2015Remote_vs2015.vcxproj

@@ -334,6 +334,7 @@
     <ClInclude Include="NotifySettingsDlg.h" />
     <ClInclude Include="FeatureLimitsDlg.h" />
     <ClInclude Include="FrpsForSubDlg.h" />
+    <ClInclude Include="ShareHostDlg.h" />
     <ClInclude Include="PluginSettingsDlg.h" />
     <ClInclude Include="PreviewTipWnd.h" />
     <ClInclude Include="TriggerSettingsDlg.h" />
@@ -462,6 +463,7 @@
     <ClCompile Include="NotifySettingsDlg.cpp" />
     <ClCompile Include="FeatureLimitsDlg.cpp" />
     <ClCompile Include="FrpsForSubDlg.cpp" />
+    <ClCompile Include="ShareHostDlg.cpp" />
     <ClCompile Include="Loader.c">
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">NotUsing</PrecompiledHeader>
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">NotUsing</PrecompiledHeader>