Add degree sign to 0 level3

xkb/.config/xkb/symbols/pvx

@@ -16,6 +16,7 @@ xkb_symbols "pvx"
     key <AC06> { [ h, H, U5350, U534D ] };
     key <AD10> { [ p, P, U26E7, U262E ] };
     key <AB03> { [ c, C, U262D ] };
+    key <AE10> { [ 0, parenright, degree ] };
     
     key <CAPS> {
         type[Group1] = "TWO_LEVEL",