支持下载资源包

[Pigeon0v0]

Close #44 （关联投票 #1095 ）

需要绘制图标

[Pigeon0v0]

• The resource packs icon on the left side of the download interface needs to be replaced. As of the time of my comment, the icon used is the same as the modpack above, which is not easy to distinguish.

Mentioned in the description.

• In the Download - Mod interface, select the game version and modloader, then enter the download interface of a mod, and you can quickly match the installed game instance that meets the conditions according to the above conditions, and it can be downloaded directly to the mods folder. I do not know if this function can be transplanted here.

Consider opening another PR for this.

[LTCatt]

预期在 2.8.3 合并 :D

[allMagicNB]

目前分支有冲突，无法直接合并，需要解决

[allMagicNB]

又有冲突了……