Wizard: Improve in-page wizard cosmetically

This commit:
1. Removes the header from the Data Driven Forms wizard
2. Adds padding around the in-page wizard so it is visually consistent
   with the images table
3. Refactors the images table header into a re-usable component that is
   now used in both the images table and the wizard
4. Allows the repositories table to fill the available vertical space in
   the wizard
5. Adjusts the package dual list selectors so that they fill the
   available horizontal space in the wizard

src/Components/sharedComponents/ImageBuilderHeader.scss

@@ -0,0 +1,7 @@
+.title {
+    display: inline;
+}
+
+.header-button {
+    padding-right: 0;
+}

src/Components/sharedComponents/ImageBuilderHeader.tsx

@@ -0,0 +1,78 @@
+import React from 'react';
+
+import { Button, Popover, Text, TextContent } from '@patternfly/react-core';
+import { ExternalLinkAltIcon, HelpIcon } from '@patternfly/react-icons';
+// eslint-disable-next-line rulesdir/disallow-fec-relative-imports
+import {
+  OpenSourceBadge,
+  PageHeader,
+  PageHeaderTitle,
+} from '@redhat-cloud-services/frontend-components';
+
+import './ImageBuilderHeader.scss';
+
+export const ImageBuilderHeader = () => {
+  return (
+    <>
+      {/*@ts-ignore*/}
+      <PageHeader>
+        <PageHeaderTitle className="title" title="Image Builder" />
+        <Popover
+          minWidth="35rem"
+          headerContent={'About image builder'}
+          bodyContent={
+            <TextContent>
+              <Text>
+                Image builder is a tool for creating deployment-ready customized
+                system images: installation disks, virtual machines, cloud
+                vendor-specific images, and others. By using image builder, you
+                can make these images faster than manual procedures because it
+                eliminates the specific configurations required for each output
+                type.
+              </Text>
+              <Text>
+                <Button
+                  component="a"
+                  target="_blank"
+                  variant="link"
+                  icon={<ExternalLinkAltIcon />}
+                  iconPosition="right"
+                  isInline
+                  href={
+                    'https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/creating_customized_rhel_images_using_the_image_builder_service'
+                  }
+                >
+                  Image builder for RPM-DNF documentation
+                </Button>
+              </Text>
+              <Text>
+                <Button
+                  component="a"
+                  target="_blank"
+                  variant="link"
+                  icon={<ExternalLinkAltIcon />}
+                  iconPosition="right"
+                  isInline
+                  href={
+                    'https://access.redhat.com/documentation/en-us/edge_management/2022/html/create_rhel_for_edge_images_and_configure_automated_management/index'
+                  }
+                >
+                  Image builder for OSTree documentation
+                </Button>
+              </Text>
+            </TextContent>
+          }
+        >
+          <Button
+            variant="plain"
+            aria-label="About image builder"
+            className="pf-u-pl-sm header-button"
+          >
+            <HelpIcon />
+          </Button>
+        </Popover>
+        <OpenSourceBadge repositoriesURL="https://www.osbuild.org/guides/image-builder-service/architecture.html" />
+      </PageHeader>
+    </>
+  );
+};