superuser_plugin_windows 2.0.0-m.2

Detect, verify user who execute Flutter program has superuser role in Windows

2.0.0-m.2

• Fix incorrect configuration in CMakeLists.txt

2.0.0-m.1

• Change condition of isSuperuser by finding local user joined Administrators group already.
• Adjust buffer size to 256 wide character.

1.0.0

• Add throw error if native code returns with error.
• Improve memory effiency.

0.1.0

• Define interface's result