chore: rename TDIcons class to TIcons #274

Job	Run time
check	5s
build (tdesign-icons-react)	5m 38s
build (tdesign-icons-view)	2m 51s
build (tdesign-icons-web-components)	5m 0s
build (tdesign-icons-flutter)	4m 5s
build (tdesign-icons-svg)	2m 25s
build (tdesign-icons-vue)	6m 2s
build (tdesign-icons-vue-next)	7m 17s
site	2m 23s
	35m 46s

Provide feedback