Should we require "avram/src/lucky/tasks/gen/model" as default?

Nobody has claimed this yet.

I consider following gen.model task is a key component of avram, right?

▸ gen.model Generate a model, query, and operations (save and delete)

I add lucky binary to my $PATH for my current laptop login user, yes, it serve as a common command for all my avram project.

When i running `lucky --help` on my project which use 1.0.0-rc1 avram, there is no gen.model task.

For now, i have to `require "avram/src/lucky/tasks/gen/model"` manually in tasks.cr to make this task available

```crystal
# See `LuckyEnv#task?`
ENV["LUCKY_TASK"] = "true"

require "./src/config/database"
require "avram/src/lucky/tasks/gen/model"
require "lucky_task"
require "./tasks/**"

LuckyTask::Runner.run
```

```sh
╰─ $ lucky --help
Usage: lucky name.of.task [options]

Available tasks:

▸ db.console Access PostgreSQL console
▸ db.create Create the database
▸ db.drop Drop the database
▸ db.migrate Run any pending migrations
▸ db.migrate.one Run just the next pending migration
▸ db.migrations.status Print the current status of migrations
▸ db.redo Rollback and run just the last migration
▸ db.reset Drop, recreate, and run migrations.
▸ db.rollback Rollback the last migration
▸ db.rollback_all Rollback all migrations
▸ db.rollback_to Rollback to a specific migration
▸ db.schema.dump Export database schema to a sql file
▸ db.schema.restore Restore database from a sql dump file
▸ db.seed.required_data Add database records required for the app to work
▸ db.seed.sample_data Add sample database records helpful for development
▸ db.setup Runs a few tasks for setting up your database
▸ db.verify_connection Verify connection to postgres
▸ gen.migration Generate a new migration
▸ gen.model Generate a model, query, and operations (save and delete)
```

I consider this is not necessory, right?

I test on avram 1.0.0-rc1 with lucky-cli 1.0.0-rc1 binary but without add lucky as project dependency.

Start with avram/src/lucky/tasks/gen/model and the tasks.cr example, then compare how the existing db.* and gen.migration tasks become available to lucky --help. Confirm whether gen.model should be loaded by default when Avram is used without Lucky as a project dependency, and verify the task appears without the manual require.

Written by the indexing model from the issue text.