feat(module:icon): add provideNzIcon and provideNzIconPatch API

[Laffery]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Application (the showcase website) / infrastructure changes
• Other... Please describe:

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Developer can use provideNzIcon API in root and provideNzIconPatch in lazy-loading module or standalone component to provide icons now.
Of course the former NzIconModule.forRoot and NzIconModule.forChild API are still supported but not recommended in standalone mode any more.

[USAGE]

import { provideNzIcon } from 'ng-zorro-antd/icon';

export const appConfig = {
  providers: [provideNzIcon(icons)]
}

import { NzIconModule, provideNzIconPatch } from 'ng-zorro-antd/icon';

// in xxx.component.ts
@Component({
  standalone: true,
  imports: [NzIconModule],
  providers: [provideNzIconPatch([QuestionOutline])]
})
class ChildComponent {}

// or in xxx.routes.ts
const routes: Routes = [{
  path: '',
  providers: [provideNzIconPatch([QuestionOutline])],
}]

Does this PR introduce a breaking change?

• Yes
• No

Other information

[zorro-bot]

This preview will be available after the AzureCI is passed.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.52%. Comparing base (bef12e6) to head (67c19f2).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8650      +/-   ##
==========================================
- Coverage   91.52%   91.52%   -0.01%     
==========================================
  Files         535      536       +1     
  Lines       18441    18445       +4     
  Branches     2907     2907              
==========================================
+ Hits        16879    16882       +3     
- Misses       1242     1243       +1     
  Partials      320      320              

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[HyperLife1119]

NzIconModule 应该可以直接复用这两个函数：

export class NzIconModule {
  static forRoot(icons: IconDefinition[]): ModuleWithProviders<NzIconModule> {
    return {
      ngModule: NzIconModule,
      providers: [
        provideNzIcon(icons)
      ]
    };
  }

  static forChild(icons: IconDefinition[]): ModuleWithProviders<NzIconModule> {
    return {
      ngModule: NzIconModule,
      providers: [
        provideNzIconPatch(icons)
      ]
    };
  }
}

[HyperLife1119]

在之前的 ng g 原理图中，我们还手动定义了一个 provideNzIcons 函数，此时我们需要将它替换为当前的实现。

[HyperLife1119]

NIT: 这两个函数的命名需要考虑改为复数形式吗？WDYT?

provideNzIcons / provideNzIconsPatch

[Laffery]

在之前的 ng g 原理图中，我们还手动定义了一个 provideNzIcons 函数，此时我们需要将它替换为当前的实现。

赞同，我稍后会更新下 schematics。还有上次提到的 doc 里的 app.config.ts

命名我们 follow 之前定义的 provideNzIcons 吧，复数语义上也更合理

[HyperLife1119]

LGTM