[Feature request] Expose context.settings for shareable configs

[Samuel-Therrien-Beslogic]

We have a shareable config file that we use across multiple projects with good default configuration. However, sometimes there are rules which require adding some custom per-project configuration on top of the base one. I would like if it was possible to use shared settings in eslint-config-* to extend certain configurations without having to create a custom plugin just for shared configs. So we don't have to re-write the conplete configuration of a rule (which also won't benefit from any update in the shared config).

For example:

"simple-import-sort/imports": [
  "error",
  {
    "groups": [
      // Side effect imports.
      [
        "^\\u0000"
      ],
      // Packages.
      // Things that start with a letter (or digit or underscore), or `@` followed by a letter.
      [
        "^@?\\w"
      ],
      // Absolute imports and other imports such as Vue-style `@/foo`.
      // Anything not matched in another group.
      [
        "^"
      ],
      // Relative imports.
      // Anything that starts with a dot, src/, or our custom paths
      [
        "^@my-project", // <-- project specific setting
        "^(\\.|src/)"
      ]
    ]
  }
],
// ...
"no-autofix/@angular-eslint/template/i18n": [
  "error",
  {
    "boundTextAllowedPattern": "(MyProject|EN|FR)", // <-- cusom for this project
    "ignoreTags": [
      // eslint-config-*
      "meta",
      "link",
      "title",
      "mat-icon"
    ],
    "ignoreAttributes": [
      // Plugin's base configuration
      "charset",
      "class",
      "color",
      "colspan",
      "fill",
      "formControlName",
      "height",
      "href",
      "id",
      "lang",
      "ngClass",
      "ngProjectAs",
      "routerLink",
      "src",
      "stroke",
      "stroke-width",
      "style",
      "svgIcon",
      "tabindex",
      "target",
      "type",
      "viewBox",
      "width",
      "xmlns",
      // eslint-config-*
      "role",
      "mat-form-field[appearance]",
      "mat-form-field[floatLabel]",
      "matTooltipPosition",
      "input[autocomplete]",
      "input[accept]",
      "name",
      "panelClass",
      "cdkColumnDef",
      "ngx-mat-select-search[name]",
      // cusom for this project
      "app-spinner[mode]"
    ]
  }
]
// ... and more

Which could be shortened to (and support updated):

"settings": {
  "my-shareable-config": {
    "ts-paths": ["@my-project"],
    "i18n": {
      "ignoreTags": [],
      "ignoreAttributes": [
        "app-spinner[mode]"
      ]
    }
  }
}

I think I'd be fine using some sort of workaround solution if this is not to be supported.