Issue #2267 — Define semantics of file-path special variables when the
Taskfile is loaded from a remote source (HTTP/HTTPS/Git):
- TASKFILE / ROOT_TASKFILE: raw URL (fixes the broken `https:/...`
caused by filepath.Join collapsing the double slash)
- TASKFILE_DIR / ROOT_DIR: empty string — a DIR variable cannot point
to a URL
- TASK_DIR: resolved against USER_WORKING_DIR
Export taskfile.IsRemoteEntrypoint so the compiler can dispatch on the
nature of the entrypoint without relying on `c.Dir == ""` (a side
effect of the remote path).
* Fixed check for an existing Taskfile: look for all possibilities, and
not only `Taskfile.yml` specifically.
* Added a description (`desc`) to the `default` task. Important to at
least `task --list` work by default (a core feature).
* Changed top comment to YAML language server comment.
* feat: redact credentials in remote urls
* chore: improve function naming
* fix: TaskfileNotSecureError should use redacted URI
* feat: unexport all node implementation fields
* fix: unexport HTTPNode.url
* refactor: remove logger from the taskfile node interface
* refactor: functional options on taskfile.Reader
* feat: use pass in debug/prompt functions to Reader rather than task Logger
* chore: reader docstrings
* fix: typo
