Add loading and empty states

Signed-off-by: alperozturk <alper_ozturk@proton.me>

app/src/main/java/com/nextcloud/client/assistant/AssistantViewModel.kt

@@ -21,12 +21,10 @@
 
 package com.nextcloud.client.assistant
 
-import androidx.compose.ui.res.stringResource
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import com.nextcloud.client.assistant.repository.AssistantRepository
 import com.nextcloud.common.NextcloudClient
-import com.owncloud.android.R
 import com.owncloud.android.lib.common.operations.RemoteOperationResult
 import com.owncloud.android.lib.resources.assistant.model.TaskList
 import com.owncloud.android.lib.resources.assistant.model.TaskType

app/src/main/java/com/nextcloud/client/assistant/AsssistantScreen.kt

@@ -23,28 +23,22 @@ package com.nextcloud.client.assistant
 
 import android.app.Activity
 import androidx.compose.foundation.ExperimentalFoundationApi
-import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.items
-import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
-import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
-import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
-import androidx.compose.ui.unit.sp
 import com.google.android.material.floatingactionbutton.FloatingActionButton
 import com.nextcloud.client.assistant.component.AddTaskAlertDialog
 import com.nextcloud.client.assistant.component.CenterText