Suggest adding an automatic or semi-automatic import tool

[xylplm]

At present, there are only two options: manual import and full import. In theory, an automated or semi automated import tool can be developed like other tools. This makes it easy to maintain complex and redundant icons. It can be implemented using angular directive or npm tools. This makes up for the inconvenience of manual import management and the problem of all imported packages being too large.

[xylplm]

Discover something useful to implement with ng schemas. This is an icon automatic import CLI command for other projects, you can refer to it： https://github.com/ng-alain/delon-builds/blob/master/ng-alain/plugin/plugin.icon.ts https://ng-alain.com/theme/icon/en