Enumeration of some improvements

[alexevanczuk]

Creating this small ticket to track some ideas for improvements to this gem and its dependencies:

DeprecationHelper improvements

1. Log with stack trace: this will help people build allow lists

ExplicitActiveRecord improvements

1. Allow allow list per class for incremental work
2. ExplicitActiveRecord::Reading

• Start with solid test cases, e.g. WhereChainExtension, pluck, find, direct execution on DB, calling find, a join against the table, calling against a relation (e.g. foo.bars), meta-programatically defined find (Foo.find_by_my_special_column) try different approaches
• Try to see if the sql subscriber can show what tables are being affected, and how

3. ExplicitActiveRecord::Persistence

• Add other ways to implicitly persist, such as update_all, etc., or at least test case that fails/skips