feat(sdk/skyux-eslint): add linting rule to detect the use of legacy icons

.cspell.json

@@ -2,6 +2,8 @@
   "import": "@skyux/dev-infra-private/.cspell-shared.json",
   "words": [
     "cyclomatic",
+    "checkmark",
+    "gantt",
     "fetchpriority",
     "interactable",
     "ngsrc",

libs/sdk/skyux-eslint/docs/rules/template/no-legacy-icons.md

@@ -0,0 +1,44 @@
+# `skyux-eslint-template/no-legacy-icons`
+
+Prevents usage of legacy icons in HTML templates.
+
+- Type: problem
+
+<br>
+
+## Rule Options
+
+The rule does not have any configuration options.
+
+<br>
+
+## Usage Examples
+
+#### Default Config
+
+```json
+{
+  "rules": {
+    "skyux-eslint-template/no-legacy-icons": ["error"]
+  }
+}
+```
+
+#### ❌ Invalid Code
+
+```html
+<sky-icon icon="plus-circle"></sky-icon>
+          ~~~~~~~~~~~~~~~~~~
+```
+```html
+<sky-action-button-container>
+  <sky-action-button (actionClick)="filterActionClick()">
+    <sky-action-button-icon iconType="trash" />
+                            ~~~~~~~~~~~~~~~~
+    <sky-action-button-header> Delete a list </sky-action-button-header>
+    <sky-action-button-details>
+      Delete an existing list.
+    </sky-action-button-details>
+  </sky-action-button>
+</sky-action-button-container>
+```

libs/sdk/skyux-eslint/project.json

@@ -26,7 +26,8 @@
       "executor": "@nx/jest:jest",
       "outputs": ["{workspaceRoot}/coverage/libs/sdk/skyux-eslint"],
       "options": {
-        "jestConfig": "libs/sdk/skyux-eslint/jest.config.ts"
+        "jestConfig": "libs/sdk/skyux-eslint/jest.config.ts",
+        "coverage": true
       }
     }
   }

libs/sdk/skyux-eslint/src/configs/template-all.ts

@@ -9,6 +9,7 @@ export default [
     rules: {
       'skyux-eslint-template/no-deprecated-classnames': 'error',
       'skyux-eslint-template/no-deprecated-directives': 'error',
+      'skyux-eslint-template/no-legacy-icons': 'error',
       'skyux-eslint-template/no-radio-group-with-nested-list': 'error',
       'skyux-eslint-template/no-unbound-id': 'error',
       'skyux-eslint-template/prefer-label-text': 'error',

libs/sdk/skyux-eslint/src/configs/template-recommended.ts

@@ -9,6 +9,7 @@ export default [
     rules: {
       'skyux-eslint-template/no-deprecated-classnames': 'error',
       'skyux-eslint-template/no-deprecated-directives': 'error',
+      'skyux-eslint-template/no-legacy-icons': 'error',
       'skyux-eslint-template/no-radio-group-with-nested-list': 'error',
       'skyux-eslint-template/no-unbound-id': 'error',
       'skyux-eslint-template/prefer-label-text': 'error',

libs/sdk/skyux-eslint/src/plugins/template-plugin.ts

@@ -9,6 +9,10 @@ import {
   rule as noDeprecatedDirectives,
   RULE_NAME as noDeprecatedDirectivesRuleName,
 } from '../rules/template/no-deprecated-directives';
+import {
+  rule as noLegacyIcons,
+  RULE_NAME as noLegacyIconsRuleName,
+} from '../rules/template/no-legacy-icons';
 import {
   rule as noRadioGroupWithNestedList,
   RULE_NAME as noRadioGroupWithNestedListRuleName,
@@ -30,6 +34,7 @@ export default {
   rules: {
     [noDeprecatedClassnamesRuleName]: noDeprecatedClassnames,
     [noDeprecatedDirectivesRuleName]: noDeprecatedDirectives,
+    [noLegacyIconsRuleName]: noLegacyIcons,
     [noRadioGroupWithNestedListRuleName]: noRadioGroupWithNestedList,
     [noUnboundIdRuleName]: noUnboundId,
     [preferLabelTextRuleName]: preferLabelText,