Given that the values will rarely change, specially considering that any
changes would be backward incompatible change.  As such, it's simpler to
keep syncing manually in the rare occasion and avoid the syncing code
overhead.

`helpers.FormatFloat` function is only used in `api`.  Moving it and
marking it as private.  We can re-export it if we find value later.

Embed pointer conversion functions in the API package to avoid
unnecessary package dependency.  `helper` package imports more
dependencies relevant for internal use (e.g. `hcl`).

`api.MockJob` is a test utility, that's only used by `command/agent`
package.  This moves it to the package and removes it from the public
API.

nomad/structs is an internal package and imports many libraries (e.g.
raft, codec) that are not relevant to api clients, and may cause
unnecessary dependency pain (e.g. `github.com/ugorji/go/codec`
version is very old now).

Here, we add a code generator that imports the relevant constants from
`nomad/structs`.

I considered using this approach for other structs, but didn't find a
quick viable way to reduce duplication.  `nomad/structs` use values as
struct fields (e.g. `string`), while `api` uses value pointer (e.g.
`*string`) instead.  Also, sometimes, `api` structs contain deprecated
fields or additional documentation, so simple copy-paste doesn't work.
For these reasons, I opt to keep the status quo.

client: restore Terminated event on every exit

Fix typo in PluginLoader

Some Windows fixes and CI

Fix one more place that should be using taskResources

taskResources handles new resource fields in a backwards compatible way

v0.9.0-dev started emitting a Terminated event every time a task process
exited. While this wasn't true in previous versions, it's a useful task
event because it's the only place for job operators to view the task's
exit code.

This behavior is asserted in the e2e/taskevents tests.

Co-Authored-By: dantoml <dani@tomlinson.io>

Co-Authored-By: dantoml <dani@tomlinson.io>

Co-Authored-By: dantoml <dani@tomlinson.io>

Due to https://github.com/tsenart/deadcode/issues/3 we can't specify
these consts on their own. This moves them into the _platform_test.go
files to avoid creating a package that only exposes a couple of values.

* Docker for Windows does not support ulimits
* Use filepath.ToSlash to test workdir
* Convert expected mount paths to system style
* Skip security-opt test on windows
  - Windows does not support seccomp, and it's unclear which options are
    available.
* Skip StartN due to lack of sigint
* docker: Use api to get image info on windows
* No bridge on windows
* Stop hardcoding /bin/

Uses the home directory and windows path expansion, as c:\tmp doesn't
necessarily exist, and mktemp would involve unnecessarily complicating
the commands.

This validates the slash variant of a RelativeDest, rather than the
platform native version, to support test execution on windows.