Use a custom EditText everywhere to be able to share with ShareUtils the selected text

This EditText class extends the AppCompatEditText class from androidx.

These changes (only in XML ressources) allow us to share the selected text by using ShareUtils.shareText, which opens the Android system chooser instead of the Huawei system chooser on EMUI devices.

app/src/main/res/layout/activity_error.xml

@@ -109,7 +109,7 @@
                 android:text="@string/your_comment"
                 android:textAppearance="?android:attr/textAppearanceMedium" />
 
-            <EditText
+            <org.schabi.newpipe.views.NewPipeEditText
                 android:id="@+id/errorCommentBox"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"

app/src/main/res/layout/dialog_edit_text.xml

@@ -7,7 +7,7 @@
     android:paddingTop="@dimen/video_item_search_padding"
     android:paddingRight="@dimen/video_item_search_padding">
 
-    <EditText
+    <org.schabi.newpipe.views.NewPipeEditText
         android:id="@+id/dialogEditText"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"

app/src/main/res/layout/dialog_feed_group_create.xml

@@ -45,7 +45,7 @@
                 app:layout_constraintStart_toEndOf="@+id/icon_preview"
                 app:layout_constraintTop_toTopOf="parent">
 
-                <EditText
+                <org.schabi.newpipe.views.NewPipeEditText
                     android:id="@+id/group_name_input"
                     android:layout_width="match_parent"
                     android:layout_height="match_parent"

app/src/main/res/layout/download_dialog.xml

@@ -18,7 +18,7 @@
         android:layout_marginBottom="6dp"
         android:text="@string/msg_name" />
 
-    <EditText
+    <org.schabi.newpipe.views.NewPipeEditText
         android:id="@+id/file_name"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"

app/src/main/res/layout/fragment_import.xml

@@ -26,7 +26,7 @@
         android:orientation="vertical"
         android:padding="16dp">
 
-        <EditText
+        <org.schabi.newpipe.views.NewPipeEditText
             android:id="@+id/input_text"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"

app/src/main/res/layout/toolbar_search_layout.xml

@@ -6,7 +6,7 @@
     android:layout_height="?attr/actionBarSize"
     tools:background="?attr/colorPrimary">
 
-    <EditText
+    <org.schabi.newpipe.views.NewPipeEditText
         android:id="@+id/toolbar_search_edit_text"
         android:layout_width="match_parent"
         android:layout_height="match_parent"