Add 'egg' package, starting with just the basics.

Author: donquixote

.gitignore

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+/.idea/
+/vendor/
+/.phpunit.cache/

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2024 Andreas Hennings
+
+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 NONINFRINGEMENT. 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.

README.md

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+# Egg
+
+An egg is a dormant form of an object, that needs a container to get its final form.

composer.json

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+{
+    "name": "donquixote/egg",
+    "description": "Egg: Objects that grow to become bigger.",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Andreas Hennings",
+            "email": "andreas@dqxtech.net"
+        }
+    ],
+    "minimum-stability": "dev",
+    "autoload": {
+        "psr-4": {
+            "Donquixote\\Egg\\": "src"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "Donquixote\\Egg\\Tests\\": "tests/src"
+        }
+    },
+    "require": {
+        "php": ">=8.2",
+        "ext-json": "*"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^9.5"
+    }
+}

phpunit.xml.dist

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+<?xml version="1.0" encoding="utf-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" colors="true" bootstrap="vendor/autoload.php" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.5/phpunit.xsd" cacheDirectory=".phpunit.cache">
+  <testsuites>
+    <testsuite name="Egg test suite">
+      <directory>./tests/src</directory>
+    </testsuite>
+  </testsuites>
+  <source>
+    <include>
+      <directory suffix=".php">./src/</directory>
+    </include>
+  </source>
+</phpunit>