feat: ✨ add common utils

src/utils/README.md

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+<!-- @format -->
+
+# Utils Feature
+
+This feature installs the PHP Extension Community Library (PECL) in the dev container. PECL is a repository for PHP extensions.
+
+More information about PECL can be found on the [PECL website](https://pecl.php.net/).
+
+## Example Usage
+
+```json
+"features": {
+    "ghcr.io/tomgrv/devcontainer-features/pecl:1": {
+        "extension": "zip"
+    }
+}
+```
+
+## Options
+
+| Options Id | Description                           | Type   | Default Value |
+| ---------- | ------------------------------------- | ------ | ------------- |
+| version    | The version of GitVersion to install. | string | latest        |
+
+## Contributing
+
+If you have a feature that you would like to add to this repository, please open an issue or submit a pull request.

src/utils/devcontainer-feature.json

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+{
+    "name": "Common Utils",
+    "version": "1.0.0",
+    "description": "Common utils for tomgrv/devcontainer-features",
+    "dependsOn": {
+        "ghcr.io/devcontainers/features/common-utils": "lts"
+    },
+    "id": "tomgrv-common-utils",
+    "installsAfter": [
+        "ghcr.io/devcontainers/features/common-utils"
+    ],
+    "options": {
+        "utils": {
+            "type": "string",
+            "default": "jq dos2unix",
+            "description": "utilities to install"
+        }
+    }
+}

src/utils/install-feature.sh

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+#!/bin/sh
+set -e
+
+### Init directories
+caller_filename=$(ps -o args= $PPID)
+caller_filepath=$(readlink -f ${caller_filename##/bin/sh})
+export source=$(dirname $caller_filepath)
+export feature=$(basename $source | sed 's/_.*$//')
+export target=${1:-/usr/local/share}/$feature
+
+### Logs
+echo "Activating feature <$feature>"
+echo "from <$source>"
+echo "to <$target>"
+
+### Makes sure the target directory exists
+mkdir -p $target
+
+### Install specific utils
+find $source \( -name "_*" -o -name "install-*.sh" \) -type f -exec cp {} $target \;
+find $target -type f -name "install-*.sh" -exec chmod +x {} \; -exec ln -s {} /usr/bin/ \;

src/utils/install.sh

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+#!/bin/sh
+set -e
+
+### Options
+UTILS="${UTILS:-"jq dos2unix"}"
+
+### Install utils
+for bin in $UTILS; do
+	if [ -n "$(command -v $bin)" ]; then
+		echo "$bin is installed."
+	elif [ -f /etc/alpine-release ]; then
+		apk update
+		apk add $bin
+	elif [ $(uname) = "Linux" ] || [ $(uname) = "Darwin" ]; then
+		sudo apt-get update
+		sudo apt-get install -y $bin
+	else
+		echo "Please install $bin."
+		exit 1
+	fi
+done
+
+### Init directories
+export source=$(dirname $(readlink -f $0))
+$source/install-feature.sh