FPP冻梨子材质 v7.0 for MC1.15

Frozen Pear Pack - 冻梨子材质

FPP冻梨子材质 v7.0 for MC1.15

更新内容：

1. 继承续更了 @Pairman 的 PTP，冻梨子材质适配了1.15
2. 简单的修复了部分在1.14升级到1.15的错误贴图
3. 修改了1.15新增贴图 by @LIPiston

Update:

1. Inherited continue more @ Pairman [PTP] (https://github.com/Pairman/PTP), Frozen Pear Pack is adapted to 1.15
2. A simple fix for some incorrect tiles in 1.14 to 1.15
3. Modified 1.15 new tiles