DotNet 8/9/10 vs2026 CI autobuild

Full Changelog: v20241116...v20260225
No major changes.

• Upgrade target framework to .Net 10
• Upgrade libwebp to v1.6.0
• Build libwebp with VC v145
• Build Mvl_preview with VS 2026
• Upgrade Newtownsoft.Json to v13.0.4

DotNet 10 x64 pre-release

NOTE: These changes are based on commit b64dfa8 but not uploaded, because GitHub CI currently cannot properly use .NET 10/VS 2026. You can try implementing these changes yourself.

• Upgrade target framework to .Net 10
• Upgrade libwebp to v1.6.0 (webmproject/libwebp@991170b)
• Build libwebp with VC v145
• Build Mvl_preview with VS 2026
• Upgrade Newtownsoft.Json to v13.0.4

Note2: Now these changes are in 094b6a6 but still not working well.

DotNet 6/8/9 CI autobuild

Full Changelog: v20241113...v20241116

DotNet 6/7/8 CI autobuild

v20241113

init dotnet8 branch

ci build test

v20240612

revert to dl artifact

update 20231125

Fixed bugs.
Add DotNet 8 release.

update 20231007

update libwebp to latest.

update 20231005

add drag support

update 20230927

Add support of Kaleido ADV engine chara, which was pre-processed by Freemote.
Add '-o' command line option.

update 20230113

Maybe last update.
VS2022/.Net Framework 4.8