chore: add initial styling bits to status modal (#8658)

This change adds a few small bits of styling to the status modal to
get us going. It:
- adds padding to the whole modal
- adds a row for the health and resources widgets
- add project health placeholder

It leaves the project activity widget alone for now.

it makes the modal look like this:


![image](https://github.com/user-attachments/assets/2074b2a9-7f1b-45c1-b947-7855ee80e0c9)

frontend/src/component/project/Project/ProjectStatus/ProjectResources.tsx

@@ -19,6 +19,7 @@ const Wrapper = styled('article')(({ theme }) => ({
     backgroundColor: theme.palette.envAccordion.expanded,
     padding: theme.spacing(3),
     borderRadius: theme.shape.borderRadiusExtraLarge,
+    minWidth: '300px',
 }));
 
 const ProjectResourcesInner = styled('div')(({ theme }) => ({

frontend/src/component/project/Project/ProjectStatus/ProjectStatusModal.tsx

@@ -6,6 +6,10 @@ import { ProjectActivity } from './ProjectActivity';
 const ModalContentContainer = styled('div')(({ theme }) => ({
     minHeight: '100vh',
     backgroundColor: theme.palette.background.default,
+    padding: theme.spacing(4),
+    display: 'flex',
+    flexFlow: 'column',
+    gap: theme.spacing(4),
 }));
 
 type Props = {
@@ -13,11 +17,28 @@ type Props = {
     close: () => void;
 };
 
+const HealthRow = styled('div')(({ theme }) => ({
+    display: 'flex',
+    flexFlow: 'row wrap',
+    padding: theme.spacing(2),
+    gap: theme.spacing(2),
+    '&>*': {
+        // todo: reconsider this value when the health widget is
+        // implemented. It may not be right, but it works for the
+        // placeholder
+        flex: '30%',
+    },
+}));
+
 export const ProjectStatusModal = ({ open, close }: Props) => {
     return (
         <SidebarModal open={open} onClose={close} label='Project status'>
             <ModalContentContainer>
+                <HealthRow>
+                    <div>Health widget placeholder</div>
                     <ProjectResources />
+                </HealthRow>
+
                 <ProjectActivity />
             </ModalContentContainer>
         </SidebarModal>