Add tphp command

[scq]

This PR adds a tphp command for executing commands inside the php container.

Example:

sc ~/c/t/learn> tdb drop
Successfully dropped pgsql14 database learn_17
sc ~/c/t/learn> tdb create
Successfully created pgsql14 database learn_17
sc ~/c/t/learn> tphp install
Using PHP Container: php-8.1
Running Command: php server/admin/cli/install_database.php --adminpass=admin --adminemail=admin@example.com --agree-license --shortname=Totara 17 development site --fullname=Totara 17 development site
Totara 17.0+ (Build: 20221108.00) command line installation program
-------------------------------------------------------------------------------
== Setting up database ==
-->System
++ Success ++
-->totara_core
++ Success ++

This makes it a bit more convenient to use the install/cron/purge/etc aliases without needing to tbash in to the container.

[derschatta]

A lot of people are using tzsh instead of tbash. Can you think of a way to make this configurable?

[scq]

That's a good point! How about a variable in .env?

I've called it INTERACTIVE_SHELL since SHELL is an existing standard environment variable (and we only use the variable where we want an interactive shell, otherwise we use bash), but open to better naming suggestions. It defaults to bash.

We could potentially also add a tshell command that runs either bash or zsh depending on your configuration, but I haven't done it here. Might be useful to use in the docs.

[derschatta]

looks good :)

[scq]

I've been using it locally for a while and discovered some issues with handling of args recently, will just convert it to a draft until I fix those