feat(progress-bar): add status prop (#1560)

* ProgressBar status feature added

* ProgressBar: Removed the css variables and use carbon-css instead.
The way of assigning the ProgressBar value has change. It is now a style
variable and scale-x is calculated in the css. This way prevent the
override of carbon css.

* Removed an unessacery span.

* Removed an unnecessary span.

* Added the status for the ProgressBarUx

* Remove `style css` and update docs.

* - Fixed the `capped` variable for more readability
- Updated docs `label` and `helperText`
- Updated docs and css

* fix: finished/error states cannot be indeterminate

* Run "yarn build:css"

* Re-run "yarn build:docs"

* test(progress-bar): assert `status` prop

* chore: add aria-busy and set valuenow to 0 when not active

---------

Co-authored-by: Eric Liu <ericyl.us@gmail.com>
Co-authored-by: Enrico Sacchetti <enrico@theetrain.ca>

types/ProgressBar/ProgressBar.svelte.d.ts

@@ -21,6 +21,12 @@ export interface ProgressBarProps
    */
   kind?: "default" | "inline" | "indented";
 
+  /**
+   * Specify the status
+   * @default "active"
+   */
+  status?: "active" | "finished" | "error";
+
   /**
    * Specify the size
    * @default "md"