chore: move cli/tests/ -> tests/ (#22369)

This looks like a massive PR, but it's only a move from cli/tests ->
tests, and updates of relative paths for files.

This is the first step towards aggregate all of the integration test
files under tests/, which will lead to a set of integration tests that
can run without the CLI binary being built.

While we could leave these tests under `cli`, it would require us to
keep a more complex directory structure for the various test runners. In
addition, we have a lot of complexity to ignore various test files in
the `cli` project itself (cargo publish exclusion rules, autotests =
false, etc).

And finally, the `tests/` folder will eventually house the `test_ffi`,
`test_napi` and other testing code, reducing the size of the root repo
directory.

For easier review, the extremely large and noisy "move" is in the first
commit (with no changes -- just a move), while the remainder of the
changes to actual files is in the second commit.

1 files changed, 41 insertions, 0 deletions

diff --git a/tests/testdata/commonjs/node_modules/left-pad/README.md b/tests/testdata/commonjs/node_modules/left-pad/README.md
new file mode 100644
index 000000000..0e70d461e
--- /dev/null
+++ b/tests/testdata/commonjs/node_modules/left-pad/README.md
@@ -0,0 +1,41 @@
+## left-pad
+
+String left pad
+
+[![Build Status][travis-image]][travis-url]
+
+## Install
+
+```bash
+$ npm install left-pad
+```
+
+## Usage
+
+```js
+const leftPad = require("left-pad");
+
+leftPad("foo", 5);
+// => "  foo"
+
+leftPad("foobar", 6);
+// => "foobar"
+
+leftPad(1, 2, "0");
+// => "01"
+
+leftPad(17, 5, 0);
+// => "00017"
+```
+
+**NOTE:** The third argument should be a single `char`. However the module
+doesn't throw an error if you supply more than one `char`s. See
+[#28](https://github.com/stevemao/left-pad/pull/28).
+
+**NOTE:** Characters having code points outside of
+[BMP plan](https://en.wikipedia.org/wiki/Plane_(Unicode)#Basic_Multilingual_Plane)
+are considered a two distinct characters. See
+[#58](https://github.com/stevemao/left-pad/issues/58).
+
+[travis-image]: https://travis-ci.org/stevemao/left-pad.svg?branch=master
+[travis-url]: https://travis-ci.org/stevemao/left-pad