[BUG FIX] 国际象棋插件 bug 修复

[aimerneige]

昨天电脑硬盘出了点问题，代码 push 完还没运行测试呢，留了几个 bug

• 只有正确安装 inkscape 时才需要清理临时文件
• 字体文件引用错误
• 全面的运行测试

功能正常，可以 merge

[aimerneige]

已修复

字体文件并没有被正确引用 @Jiang-Red

点击查看日志

WARN[0097] [file]获取md5失败, 请自行确保下载文件 text.GNUUnifontFontFile 的正确性: reg: no such key 
ERRO[0097] [bot] execute handler err: status code: 404
goroutine 1060 [running]:
runtime/debug.Stack()
	/usr/local/go/src/runtime/debug/stack.go:24 +0x65
github.com/wdvxdr1123/ZeroBot.match.func2.1.1()
	/home/aimer/.golang/pkg/mod/github.com/wdvxdr1123/[email protected]/bot.go:253 +0x45
panic({0xf3c540, 0xc003b86020})
	/usr/local/go/src/runtime/panic.go:884 +0x213
github.com/FloatTech/ZeroBot-Plugin/plugin/chess.generateCharBoardImage({0xc0005f04b0?, 0x8?})
	/home/aimer/Code/ZeroBot-Plugin/plugin/chess/core.go:635 +0x5d1
github.com/FloatTech/ZeroBot-Plugin/plugin/chess.getBoardElement(0x368047e7?)
	/home/aimer/Code/ZeroBot-Plugin/plugin/chess/core.go:485 +0x765
github.com/FloatTech/ZeroBot-Plugin/plugin/chess.createGame(0x0, 0xc001fbee00?, 0xba8fdb2a, {0xc0043520a0, 0x9})
	/home/aimer/Code/ZeroBot-Plugin/plugin/chess/core.go:429 +0x270
github.com/FloatTech/ZeroBot-Plugin/plugin/chess.game(...)
	/home/aimer/Code/ZeroBot-Plugin/plugin/chess/core.go:46
github.com/FloatTech/ZeroBot-Plugin/plugin/chess.init.0.func1(0xc0004b4050)
	/home/aimer/Code/ZeroBot-Plugin/plugin/chess/chess.go:71 +0x45
github.com/wdvxdr1123/ZeroBot.match.func2.1()
	/home/aimer/.golang/pkg/mod/github.com/wdvxdr1123/[email protected]/bot.go:256 +0x68
created by github.com/wdvxdr1123/ZeroBot.match.func2
	/home/aimer/.golang/pkg/mod/github.com/wdvxdr1123/[email protected]/bot.go:249 +0xaa 

[fumiama]

虽然但是，我打算把你inkspace换成resvgo（