feat: added russian translations

mobile/src/main/java/ru/omni_devel/cards/MainActivity.kt

@@ -33,6 +33,7 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.LocalUriHandler
+import androidx.compose.ui.res.stringResource
 import kotlinx.serialization.json.Json
 import ru.omni_devel.cards.ui.theme.OmniCardsTheme
 
@@ -87,7 +88,7 @@ fun MainPage(
         modifier = Modifier.fillMaxSize()
     ) {
         Page(
-            "OmniCards",
+            stringResource(R.string.app_name),
             innerPadding
         ) {
             Column(
@@ -95,7 +96,9 @@ fun MainPage(
                 verticalArrangement = Arrangement.spacedBy(8.dp)
             ) {
                 if (cards.isEmpty()) {
-                    Text("Add new card to get started")
+                    Text(
+                        stringResource(R.string.add_card_to_get_started)
+                    )
                 } else {
                     for (card in cards) {
                         CardButton(card, onDeleteCard)
@@ -126,24 +129,24 @@ fun MainPage(
                         context.startActivity(intent)
                     }
                 ) {
-                    Text("Add card")
+                    Text(stringResource(R.string.do_add_card))
                 }
                 FullWidthButton(
                     onClick = {
-                        Toast.makeText(context, "Sync in progress...", Toast.LENGTH_SHORT).show()
+                        Toast.makeText(context, context.getString(R.string.sync_in_progress), Toast.LENGTH_SHORT).show()
 
                         sendToWatch(context, "/updateCards", Json.encodeToString(getDbFun().getCards())) { isSuccess ->
                             if (isSuccess) {
-                                Toast.makeText(context, "Successfully synced!", Toast.LENGTH_SHORT).show()
+                                Toast.makeText(context, context.getString(R.string.sync_is_successful), Toast.LENGTH_SHORT).show()
                             } else {
-                                Toast.makeText(context, "Sync failed! Please, check your connection", Toast.LENGTH_LONG).show()
+                                Toast.makeText(context, context.getString(R.string.sync_is_fail), Toast.LENGTH_LONG).show()
                             }
                         }
 
                         isActionBarShowed = false
                     }
                 ) {
-                    Text("Sync with WearOS")
+                    Text(stringResource(R.string.do_sync))
                 }
                 FullWidthButton(
                     onClick = {
@@ -154,7 +157,7 @@ fun MainPage(
                         isActionBarShowed = false
                     }
                 ) {
-                    Text("Backup")
+                    Text(stringResource(R.string.open_backup_menu))
                 }
                 FullWidthButton(
                     onClick = {
@@ -163,7 +166,7 @@ fun MainPage(
                         isActionBarShowed = false
                     }
                 ) {
-                    Text("Source code")
+                    Text(stringResource(R.string.source_code))
                 }
                 FullWidthButton(
                     onClick = {