The absence of a default value for `repo-token` means that this action may start to fail long after it has been implemented by a developer: the developer adds the action to their workflow (without a token because it's optional) and then, at some point in the future, their workflows may *randomly* start to fail because they've hit the unauthenticated rate-limit.
The default value of the version input is defined in the action metadata, so having another default setting in the code
is purely redundant and doubles the maintenance effort required on every major release of Task (note that they already
went out of sync).
Change project name to "arduino/setup-task"
The Task documentation consistently refers to the tool as "Task". Taskfile is the term used for Task's configuration file.
This action is setting up the Task tool, not setting up the Task configuration file, so "arduino/setup-task" is more
appropriate than "arduino/setup-taskfile".
This allows the node_modules to be removed from the repository, as is already done in the `arduino/setup-arduino-cli`,
`arduino/arduino-lint-action`, and `arduino/create-changelog` actions.
