Rename Views method add_table() to addTable()

I'm going to try to jump on this as it's simple and I'm trying to make my first patch.

Here's the patch. I put needs review because it's my first patch, but all the functions called are in indeed coming from views, so it looks like it should solve the issue.

+++ b/core/modules/views/lib/Drupal/views/ManyToOneHelper.phpundefined
@@ -65,7 +65,7 @@ public function getField() {
+  function addTable($join = NULL, $alias = NULL) {

+++ b/core/modules/views/lib/Drupal/views/Plugin/views/query/Sql.phpundefined
@@ -364,7 +364,7 @@ function add_relationship($alias, JoinPluginBase $join, $base, $link_point = NUL
+  function addTable($table, $relationship = NULL, JoinPluginBase $join = NULL, $alias = NULL) {

Add public access modifier in front of the functions to adher to the new OOP standards.

#3: 0001-making-add_table-into-camelcase.patch queued for re-testing.

Looks good to me now !

Re-rolled patch since access modifier was missing.

#8: 2002332-8-rename-add_table.patch queued for re-testing.

Looks fine now, really :) !

Committed 2c2ae72 and pushed to 8.x. Thanks!