Add support of crystal v0.25.0

[imdrasil]

What does this PR do?

Introduce crystal 0.25.0 support and all related changes.

Any background context you want to provide?

Crystal 0.25.0 introduced a lot of breaking changes.

Release notes

General

• remove time_zone dependency
• remove requiring "inflector/string"
• adds cloning to Time::Location & Time::Location::Zone

QueryBuilder

• all eager loading methods are extracted to separate module QueryBuilder::EagerLoading which is included in QueryBuilder::IModelQuery

Model

• now Jennifer::Model::Authentication also checks a minimum allowed password size (1 character)
• now Jennifer::Model::ParameterConverter.to_time uses lConfig.local_time_zone as default one
• adds compatibility with postgres latest PG::Numeric type in Model::ParameterConverter.to_numeric
• now next Resource static methods are abstract: actual_table_field_count, primary_field_name, build, all, superclass
• Resource#inspect now returns simplified version (only class name and object id)
• Resource.all now is a macro method
• fixies Model::Transaltion.lookup_ancestors from breaking at compilation time
• now all built-in validations use attribute getter methods instead of variables

Config

• local_time_zone now is a Time::Location
• local time zone is loaded using Time::Location.local as default value

Migration

• Jennifer::Migration::Base.migrations returns a hash of version number => migration class instead of array of classes