feat: add utm tag to powered by link

frontend/src/components/home/ContentLinkShare.vue

@@ -21,7 +21,7 @@
 			</h1>
 			<div class="box has-text-left view">
 				<RouterView />
-				<PoweredByLink />
+				<PoweredByLink utm-medium="link_share" />
 			</div>
 		</div>
 	</div>

frontend/src/components/home/Navigation.vue

@@ -109,7 +109,10 @@
 			</nav>
 		</template>
 
-		<PoweredByLink class="mt-auto" />
+		<PoweredByLink
+			class="mt-auto"
+			utm-medium="navigation"
+		/>
 	</aside>
 </template>
 

frontend/src/components/home/PoweredByLink.vue

@@ -1,7 +1,7 @@
 <template>
 	<BaseButton
 		class="menu-bottom-link"
-		:href="poweredByUrl"
+		:href="computedUrl"
 		target="_blank"
 	>
 		{{ $t('misc.poweredBy') }}
@@ -9,8 +9,15 @@
 </template>
 
 <script setup lang="ts">
+import {computed, defineProps} from 'vue'
 import BaseButton from '@/components/base/BaseButton.vue'
 import {POWERED_BY as poweredByUrl} from '@/urls'
+
+const props = defineProps<{
+	utmMedium: string;
+}>()
+
+const computedUrl = computed(() => `${poweredByUrl}&utm_medium=${props.utmMedium}`)
 </script>
 
 <style lang="scss">

frontend/src/urls.ts

@@ -1,2 +1,2 @@
-export const POWERED_BY = 'https://vikunja.io'
+export const POWERED_BY = 'https://vikunja.io/?utm_source=powered_by'
 export const CALDAV_DOCS = 'https://vikunja.io/docs/caldav/'