Added custom cookies

Author: katharinalisalin

packages/custom-cookies/docs/README.md

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+---
+title: Overview
+---
+
+# Implementing custom cookies  
+
+This example shows how to customize a cookie consent and checking if users 
+accepted it.
+
+Download example as archive:
+
+[Download .zip][Download]{ .md-button .md-button--priary }
+
+Unzip archive, change to the folder and enter:
+
+``` bash
+pip install -r requirements.txt
+mkdocs serve
+```
+
+  [Download]: https://minhaskamal.github.io/DownGit/#/home?url=https://github.com/mkdocs-material/examples/tree/master/examples/tags

packages/custom-cookies/docs/javascripts/consent.js

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+var consent = __md_get("__consent")
+if (consent && consent.custom) {
+  /* The user accepted the cookie */
+  alert$.next("Custom cookie was accepted")
+}

packages/custom-cookies/mkdocs.yml

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+# Copyright (c) 2022 Martin Donath <[email protected]>
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+
+# -----------------------------------------------------------------------------
+# Recommended: set up configuration validation, see https://bit.ly/3WT2GkR
+# -----------------------------------------------------------------------------
+
+# Project information
+site_name: Implementing custom cookies 
+
+# Repository
+repo_name: mkdocs-material/examples
+repo_url: https://github.com/mkdocs-material/examples
+edit_uri: edit/master/examples/custom-cookies/docs
+
+# Theme
+theme:
+  name: material
+  features:
+    - navigation.sections
+
+extra_javascript:
+  - javascripts/consent.js
+
+extra:
+  consent:
+    cookies:
+      analytics: Google Analytics
+      custom: Custom cookie
+    actions:
+      - accept
+      - manage 
+
+copyright: >
+  Copyright &copy; 2016 - 2022 Martin Donath –
+  <a href="#__consent">Change cookie settings</a>
+
+# Markdown extensions
+markdown_extensions:
+  - attr_list
+  - toc:
+      permalink: true
+

packages/custom-cookies/requirements.txt

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+# Copyright (c) 2022 Martin Donath <[email protected]>
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+
+mkdocs-material