V2 Wizard: Add File System Configuration Step (HMS-2781)

The FSC step is added to the wizard and takes full advantage of Redux
for state management.

This is still a work in progress.

Supported features:
1. Select partition mountpoint prefix (e.g. /var, /home)
2. Edit partition mountpoint suffix (e.g. /home/videogames)
3. Change displayed units (KiB, MiB, GiB)

Supported but buggy features:
1. Edit partition size

Unsupported features:
1. Add partitions
2. Remove partitions
3. Validation

src/test/Components/CreateImageWizardV2/steps/Packages/Packages.test.tsx

@@ -39,6 +39,7 @@ const goToPackagesStep = async () => {
   await clickNext(); // Registration
   await clickRegisterLater();
   await clickNext(); // OpenSCAP
+  await clickNext(); // File System
   await clickNext(); // Custom repositories
   await clickNext(); // Additional packages
 };