Extract cirq_aqt (#4157)

Extracts cirq.aqt to cirq_aqt. 

Also: 

- consolidated package building with the `release.yml` job (`dev_tools/packaging/produce-package.sh`)
- consolidated module listing logic in scripts to use the new modules.py utility:
- adds a utility to list modules that can be used from bash scripts as well as python scripts, it parses the setup.py files and can list metadata from that information (in the future we can do mass updates to version files, etc.): 

```
source dev_tools/pypath
python3 dev_tools/modules.py --help 
```

```
usage: A utility for modules. [-h] {list} ...

optional arguments:
  -h, --help  show this help message and exit

subcommands:
  valid subcommands

  {list}      additional help
    list      lists all the modules
```


```
python3 dev_tools/modules.py list --help 
```

```
usage: A utility for modules. list [-h] [--mode {folder,package-path}] [--include-parent]

optional arguments:
  -h, --help            show this help message and exit
  --mode {folder,package-path}
                        'folder' to list root folder for module, 'package-path' for top level python package path
  --include-parent      whether to include the parent package or not

```

.github/CODEOWNERS

@@ -12,7 +12,7 @@ cirq-google/**/*.* @wcourtney @quantumlib/cirq-maintainers @vtomole @cduck
 
 cirq-core/cirq/ionq/**/*.* @dabacon @ColemanCollins @nakardo @gmauricio @quantumlib/cirq-maintainers @vtomole @cduck
 
-cirq-core/cirq/aqt/**/*.* @ma5x @pschindler @alfrisch @quantumlib/cirq-maintainers @vtomole @cduck
+cirq-aqt/**/*.* @ma5x @pschindler @alfrisch @quantumlib/cirq-maintainers @vtomole @cduck
 
 cirq-core/cirq/pasqal/**/*.* @HGSilveri @quantumlib/cirq-maintainers @vtomole @cduck
 

.github/workflows/release-master.yml

@@ -29,12 +29,5 @@ jobs:
           export CIRQ_PRE_RELEASE_VERSION=$(dev_tools/packaging/generate-dev-version-id.sh)
           [[ "$CIRQ_PRE_RELEASE_VERSION" =~ .*dev.* ]] && echo "Deploying dev version '$CIRQ_PRE_RELEASE_VERSION'" || (echo "not dev version"; exit 1)
           out_dir=$(pwd)/dist
-          echo "cirq metapackage..."
-          python3 setup.py bdist_wheel -d "${out_dir}"
-          echo "cirq-core..."
-          cd cirq-core
-          python3 setup.py bdist_wheel -d "${out_dir}"
-          echo "cirq-google..."
-          cd ../cirq-google
-          python3 setup.py bdist_wheel -d "${out_dir}"
-          twine upload "${out_dir}/*"
+          dev_tools/packaging/produce-package.sh ${out_dir} $CIRQ_PRE_RELEASE_VERSION
+          twine upload "${out_dir}/*"

check/pylint

@@ -11,4 +11,6 @@
 cd "$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 cd "$(git rev-parse --show-toplevel)"
 
-pylint --rcfile=dev_tools/conf/.pylintrc $@ cirq-core/cirq cirq-google/cirq_google dev_tools examples
+CIRQ_MODULES=$(env PYTHONPATH=. python dev_tools/modules.py list --mode package-path)
+
+pylint --rcfile=dev_tools/conf/.pylintrc $@ $CIRQ_MODULES dev_tools examples

cirq-aqt/LICENSE

@@ -0,0 +1,201 @@
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cirq-aqt/README.rst

@@ -0,0 +1,27 @@
+.. image:: https://quantumai.google/site-assets/images/marketing/icons/ic-qcs.png
+  :target: https://github.com/quantumlib/cirq/
+  :alt: cirq-aqt
+  :width: 500px
+
+`Cirq <https://quantumai.google/cirq>`__ is a Python library for writing, manipulating, and optimizing quantum
+circuits and running them against quantum computers and simulators.
+
+This module is **cirq-aqt**, which provides everything you'll need to run Cirq quantum algorithms on AQT quantum computers.
+
+Documentation
+-------------
+
+To get started with the Alpine Quantum Technologies, checkout the following guide and tutorial:
+
+- `Access and authentication <https://quantumai.google/cirq/aqt/access>`__
+- `Getting started guide <https://quantumai.google/cirq/tutorials/aqt/start>`__
+
+Installation
+------------
+
+To install the stable version of only **cirq-aqt**, use `pip install cirq-aqt`.
+To install the pre-release version of only **cirq-aqt**, use `pip install cirq-aqt --pre`.
+
+Note, that this will install both cirq-aqt and cirq-core as well.
+
+To get all the optional modules installed as well, you'll have to use `pip install cirq` or `pip install cirq --pre` for the pre-release version.

cirq-core/cirq/aqt/__init__.py → cirq-aqt/cirq_aqt/__init__.py

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from cirq.aqt.aqt_sampler import AQTSampler, AQTSamplerLocalSimulator
-from cirq.aqt.aqt_device import AQTSimulator
+from cirq_aqt.aqt_sampler import AQTSampler, AQTSamplerLocalSimulator
+from cirq_aqt.aqt_device import AQTSimulator
 
 """Types and methods related to the AQT ion trap device"""

cirq-aqt/cirq_aqt/_version.py

@@ -0,0 +1,17 @@
+# Copyright 2021 The Cirq Developers
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Define version number here, read it from setup.py automatically"""
+
+__version__ = "0.12.0.dev"