[activerecord] Update links to use https instead of http [ci skip]

Remove frozen_string_literal magic comment from templates

[activesupport] Update links to use https instead of http [ci skip]

Update MIT licenses link [ci skip]

Closes #30134.

Update debugging rails applications guide [ci skip]

[ci skip] form_with in the getting started guide.

Add back a bit about a resource oriented style of routing.

Fix broken link to mysql docs in database.yml [ci skip]

Fix link in Contributing Ruby on Rails guide [ci skip]

* Add Contributing to the Rails Code link.
* Wiki link for Spanish is redirect.
* The base branch of Polish repo is master. And Turkish is, too.
* Unified expression `rails-dev-box`
* The Clone url is wrong.
* The mailing list url is old.

Update Contributing to Ruby on Rails guide [ci skip]

Update generator guide [ci skip]

`SET time zone 'value'` is an alias for `SET timezone TO 'value'`.

https://www.postgresql.org/docs/current/static/sql-set.html

So if `variables["timezone"]` is specified, it is enough to
`SET timezone` once.

Update Rails on Rack guide [ci skip]

Make `restart` and `dev:cache` tasks work when customizing pid file path

Update Autoloading and Reloading Constants guide [ci skip]

Originally, it hard-coded pid file path. It can not be removed when customizing
pid file path.
But rake task can not get pid file path. Therefore, do not remove file in rake
task, makes it possible to judge whether it is restart from the argument of the
command and removes the file in server command.

Fixes #29306

Add executable file `activestorage/bin/test`

```
rails$ cd activestorage/
rails/activestorage$ bin/test
........(compressed)....
rails/activestorage$ bin/test test/controllers/disk_controller_test.rb
.(compressed)..
rails/activestorage$ bin/test test/controllers/disk_controller_test.rb:42
.
```

Add expiry metadata to Cookies and freshen expires option to support duration