Retry switching to use CIPD ninja v1.8.2

This reverts commit 0a5bae7ebc + some modifications on recipe module.

The previous CL https://crrev.com/c/3697958 ensures depot_tools/.cipd_bin in recipe environments. This CL copies ninja.exe from .cipd_bin to depot_tools root as cipd_bin_setup.bat.
For developers, it's expected to run update_depot_tools which triggers cipd_bin_setup.
For CI/CQ, depot_tools._cipd_bin_setup() should be called before using ninja/autoninja recipe module APIs.

Builds with depot_tools recipe bundle are tested using led.

# Windows
> led get-build 8811491780369249585 | led edit-recipe-bundle -O depot_tools="$HOME/depot_tools" | led launch
https://ci.chromium.org/swarming/task/5b7512ee9d91fc10?

# Linux
> led get-build 8811504372914233697 | led edit-recipe-bundle -O depot_tools="$HOME/depot_tools" | led launch
https://ci.chromium.org/swarming/task/5b7515832d0f7c10

Original change's description:
> Revert "Switch to use CIPD ninja v1.8.2"
>
> This reverts commit c90a982106.
>
> Reason for revert:
> https://logs.chromium.org/logs/chromium/buildbucket/cr-buildbucket/8811949917908303825/+/u/compile/stdout
>
> Original change's description:
> > Switch to use CIPD ninja v1.8.2
> >
> > https://crrev.com/c/3674981 installed CIPD ninja packages.
> > This CL switches from the old ninja binaries to them.
> >
> > Note that this CL doesn't change ninja version. the old/CIPD ninja binaries are v1.8.2.
> >
> > The differences from the old binaries are
> > - the CIPD packages don't use chromium's clang.
> > - the CIPD package for Linux doesn't use chromium's sysroot.
> > - the min macOS version is 10.13, which was 10.6.
> > Please also see https://crsrc.org/i/3pp/ninja/install_bootstrap.sh
> >
> >
> > On Windows, ninja.exe will be installed under .cipd_bin.
> > But there are many places that assume that ninja.exe exists on depot_tools root. So this CL also copies the ninja.exe from .cipd_bin to root in cipd_bin_setup.bat.
> >
> > Bug: 931218
> > Change-Id: Ib67eee5e9b6ad9b2937b789626970d9c85867dbd
> > Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3674982
> > Commit-Queue: Junji Watanabe <jwata@google.com>
> > Reviewed-by: Philipp Wollermann <philwo@google.com>
> > Reviewed-by: Takuto Ikuta <tikuta@chromium.org>
> > Reviewed-by: Nico Weber <thakis@chromium.org>
> > Reviewed-by: Josip Sokcevic <sokcevic@google.com>
>
> Bug: 931218
> Change-Id: I08d61dad119a0d23ae9ec8b1ed787dd3915de697
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3686854
> Auto-Submit: Takuto Ikuta <tikuta@chromium.org>
> Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
> Commit-Queue: Takuto Ikuta <tikuta@chromium.org>
> Owners-Override: Takuto Ikuta <tikuta@chromium.org>

Bug: 931218
Recipe-Nontrivial-Roll: build
Recipe-Nontrivial-Roll: build_limited
Recipe-Nontrivial-Roll: chrome_release
Recipe-Nontrivial-Roll: infra
Change-Id: Ic7a9395c0e858823375f1a6ec79034dbc54230bb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3696963
Reviewed-by: Fumitoshi Ukai <ukai@google.com>
Reviewed-by: Josip Sokcevic <sokcevic@google.com>
Commit-Queue: Junji Watanabe <jwata@google.com>
Reviewed-by: Takuto Ikuta <tikuta@chromium.org>

.gitignore

@@ -6,6 +6,9 @@
 /.cipd_client*
 /.versions
 
+# ignore ninja.exe copied from .cipd_bin.
+/ninja.exe
+
 # Ignore "disable auto update" sentinel file.
 .disable_auto_update