Enable extra shortcuts in navigate-as-you-type mode

Enabled functionality:

- Copy file path (^K)
- Run desktop search utility (^/)
- Rename file (^R)
- Open with... (^O)
- Pin current directory (^B)
- Visit pinned directory (^V)
- Extract archive (^X)

nnn.c

@@ -982,6 +982,13 @@ filterentries(char *path)
 			case CONTROL('L'):
 				if (len == 1)
 					cur = oldcur; // fallthrough
+			case CONTROL('K'): // fallthrough
+			case CONTROL('O'): // fallthrough
+			case CONTROL('B'): // fallthrough
+			case CONTROL('V'): // fallthrough
+			case CONTROL('R'): // fallthrough
+			case CONTROL('X'): // fallthrough
+			case CONTROL('_'): // fallthrough
 			case CONTROL('Q'):
 				goto end;
 			default: