lerp method
Linearly interpolate from one ChannelListHeaderThemeData to another.
Implementation
ChannelListHeaderThemeData lerp(
ChannelListHeaderThemeData a,
ChannelListHeaderThemeData b,
double t,
) =>
ChannelListHeaderThemeData(
avatarTheme:
const AvatarThemeData().lerp(a.avatarTheme!, b.avatarTheme!, t),
color: Color.lerp(a.color, b.color, t),
titleStyle: TextStyle.lerp(a.titleStyle, b.titleStyle, t),
);