Add Mosyle to well-known MDM list (#35482)

# Checklist for submitter

If some of the following don't apply, delete the relevant line.

- [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/guides/committing-changes.md#changes-files)
for more information.

Co-authored-by: Jordan Montgomery <elijah.jordan.montgomery@gmail.com>

changes/251110-known-mdm-mosyle

@@ -0,0 +1 @@
+- Mosyle added to the list of well-known MDM platforms

server/fleet/hosts.go

@@ -1175,6 +1175,7 @@ const (
 	WellKnownMDMIntune    = "Intune"
 	WellKnownMDMSimpleMDM = "SimpleMDM"
 	WellKnownMDMFleet     = "Fleet"
+	WellKnownMDMMosyle    = "Mosyle"
 )
 
 var mdmNameFromServerURLChecks = map[string]string{
@@ -1186,6 +1187,7 @@ var mdmNameFromServerURLChecks = map[string]string{
 	"microsoft": WellKnownMDMIntune,
 	"simplemdm": WellKnownMDMSimpleMDM,
 	"fleetdm":   WellKnownMDMFleet,
+	"mosyle":    WellKnownMDMMosyle,
 }
 
 // MDMNameFromServerURL returns the MDM solution name corresponding to the