Mnesia wrapper for Elixir

[shahryarjb]

I will create Mnesia wrapper for Elixir with livebook examples and testing. it includes some guard and entries behaviour to be like a assistant for you in another version I will try to create mix for this and mixed with our macro

Features:

• [x] We need a function or macro to wait tables, has retry counter
• [ ] It can be sub_module of our module, each field should has macro for getting config
• [x] We need CRUD functions or which are created by macro
• [x] We need Pagination strategies and should be an option for read
• [x] We need unique field checker
• [ ] We need strategies for sorting all auto incremented id when a record deleted
• [x] We need id_tracker template
• [ ] Merge with guardedstruct

[shahryarjb]

Add some Mnesia functions without testing, wrapper: https://github.com/mishka-group/mishka_developer_tools/commit/289471915bb3550123d522bc7232cb77cb47057c

[shahryarjb]

Add some mnesia functions without testing, wrapper v2: https://github.com/mishka-group/mishka_developer_tools/commit/9a79e889e4f7960a88bea5a71e688010c7779c33