I18n: use IFACE_ to translate status bar info & viewport statistics

Although the information displayed in the status bar is strictly
speaking reports, it makes sense to translate them using the Interface
setting instead of Reports, as the tool names and stats terms are
also translated in other UI places (toolbar, menus).

This change includes status bars statistics and keymaps, and viewport
statistics.

The change is quite extensive as it is all or nothing. Translating
keymaps using Interface means some status messages will include them
indirectly, and thus cannot use Reports without having a weird mix of
original and translated words. In turn, having only some messages
translated would be even more confusing.
The result is that all messages related to input are now translated with
Interface, which I think also makes sense.

Discussed as a followup to !116804.

@@ -637,0 +633,4 @@
+    STRNCPY(msg,
+            data->sample_palette ?
+                IFACE_("Sample color for palette. Use Left Click to sample more colors") :
+                IFACE_("Sample color for brush. Use Left Click to sample for palette instead"));

@@ -1120,3 +1116,1 @@
-           "%s: panning, %s%s%s: orientation lock (%s), "
-           "%s: distance/angle measurements (%s), "
-           "%s: x-ray (%s)"),
+      IFACE_("%s: confirm, %s: cancel, %s: undo, "

@@ -479,3 +479,2 @@
         C,
-        RPT_("Select a ring to be cut, use mouse-wheel or page-up/down for number of cuts, "
-             "hold Alt for smooth"));
+        IFACE_("Select a ring to be cut, use mouse-wheel or page-up/down for number of cuts, "

@@ -766,3 +766,3 @@
   ss->draw_faded_cursor = true;
 
-  const char *status_str = RPT_(
+  const char *status_str = IFACE_(

@@ -147,3 +147,3 @@
 static int add_marker_at_click_invoke(bContext *C, wmOperator *op, const wmEvent * /*event*/)
 {
-  ED_workspace_status_text(C, RPT_("Use LMB click to define location where place the marker"));
+  ED_workspace_status_text(C, IFACE_("Use LMB click to define location where place the marker"));