Add UI for adding fleet maintained apps (#22204)

relates to #21775

> NOTE: there still needs to be integrated with the API when this work
is done.

Adds the UI for adding Fleet maintained applications. This includes:

**the view to see all the fleet maintained apps**


![image](https://github.com/user-attachments/assets/f49983d1-df6d-4721-b50d-a4fa78b2c85e)

**The fleet maintained app details Page:**


![image](https://github.com/user-attachments/assets/974c4a83-211e-45de-b0cc-2c5f6e055896)



<!-- Note that API documentation changes are now addressed by the
product design team. -->

- [x] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
See [Changes
files](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/Committing-Changes.md#changes-files)
for more information.
- [ ] Added/updated tests
- [ ] Manual QA for all new/changed functionality

frontend/components/TableContainer/DataTable/HeaderCell/HeaderCell.tsx

@@ -1,17 +1,19 @@
-import React from "react";
+import React, { ReactNode } from "react";
 
 import classnames from "classnames";
 
 interface IHeaderCellProps {
-  value: string | JSX.Element; // either a string or a TooltipWrapper
+  value: ReactNode;
   isSortedDesc?: boolean;
   disableSortBy?: boolean;
+  tootip?: ReactNode;
 }
 
 const HeaderCell = ({
   value,
   isSortedDesc,
   disableSortBy,
+  tootip,
 }: IHeaderCellProps): JSX.Element => {
   let sortArrowClass = "";
   if (isSortedDesc === undefined) {

frontend/components/TableContainer/DataTable/SoftwareNameCell/SoftwareNameCell.tsx

@@ -46,7 +46,10 @@ const InstallIconWithTooltip = ({
               .
             </>
           ) : (
-            "Software can be installed on Host details page."
+            <>
+              Install manually on <b>Host details</b> page or automatically with
+              policy automations.
+            </>
           )}
         </span>
       </ReactTooltip>
@@ -55,8 +58,9 @@ const InstallIconWithTooltip = ({
 };
 
 interface ISoftwareNameCellProps {
-  name: string;
-  source: string;
+  name?: string;
+  source?: string;
+  /** pass in a `path` that this cell will link to */
   path?: string;
   router?: InjectedRouter;
   hasPackage?: boolean;