Add missing terminfo capabilities

This adds capabilities for focus in/out (XF, kxIN, kxOUT) and bracketed
paste (BD, BE, PE, PS).

extra/alacritty.info

@@ -108,3 +108,5 @@ alacritty+common|base fragment for alacritty,
     hs, dsl=\E]2;\007, fsl=^G, tsl=\E]2;,
     Smulx=\E[4\:%p1%dm,
     Sync=\EP=%p1%ds\E\\,
+    XF, kxIN=\E[I, kxOUT=\E[O,
+    BD=\E[?2004l, BE=\E[?2004h, PE=\E[201~, PS=\E[200~,