Added contentDescriptions for the keys and a new string resource

app/src/main/kotlin/com/simplemobiletools/keyboard/helpers/MyKeyboard.kt

@@ -222,6 +222,41 @@ class MyKeyboard {
             a.recycle()
         }
 
+        /**
+         * Content description for talkback functional
+         */
+        fun getContentDescription(context: Context): CharSequence {
+            return when (code) {
+                KEYCODE_SHIFT -> {
+                    context.getString(R.string.keycode_shift)
+                }
+
+                KEYCODE_MODE_CHANGE -> {
+                    context.getString(R.string.keycode_mode_change)
+                }
+
+                KEYCODE_ENTER -> {
+                    context.getString(R.string.keycode_enter)
+                }
+
+                KEYCODE_DELETE -> {
+                    context.getString(R.string.keycode_delete)
+                }
+
+                KEYCODE_SPACE -> {
+                    context.getString(R.string.keycode_space)
+                }
+
+                KEYCODE_EMOJI -> {
+                    context.getString(R.string.emojis)
+                }
+
+                else -> {
+                    label
+                }
+            }
+        }
+
         /** Create an empty key with no attributes.  */
         init {
             height = parent.defaultHeight