Move buttons to separate component (#380)

Co-authored-by: kolaente <k@knt.li>
Reviewed-on: https://kolaente.dev/vikunja/frontend/pulls/380
Co-authored-by: konrad <konrad@kola-entertainments.de>
Co-committed-by: konrad <konrad@kola-entertainments.de>

src/views/teams/NewTeam.vue

@@ -16,12 +16,9 @@
 						v-model="team.name"/>
 				</p>
 				<p class="control">
-					<button class="button is-primary has-no-shadow" type="submit">
-						<span class="icon is-small">
-							<icon icon="plus"/>
-						</span>
+					<x-button :shadow="false" @click="newTeam" icon="plus">
 						Add
-					</button>
+					</x-button>
 				</p>
 			</div>
 			<p class="help is-danger" v-if="showError && team.name === ''">