misc: Add logos for more OIDC providers

RomM will now display the correct logo when `OIDC_PROVIDER` is set to
any of the following values (case-insensitive):

* `FusionAuth`
* `Kanidm`
* `Logto`
* `Pocket ID` (or `Pocket-ID`). NOTE: `PocketID` will not work.

frontend/src/views/Auth/Login.vue

@@ -138,7 +138,7 @@ async function loginOIDC() {
             <template v-if="oidcProvider" #prepend>
               <v-icon size="20">
                 <v-img
-                  :src="`/assets/dashboard-icons/${oidcProvider.toLowerCase()}.png`"
+                  :src="`/assets/dashboard-icons/${oidcProvider.toLowerCase().replace(/ /g, '-')}.png`"
                 >
                   <template #error>
                     <v-icon size="20">mdi-key</v-icon>