Added script for linking local versions of Bedrock* deps for testing

install-local-protocol.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+echo "--- Installing BedrockProtocol, BedrockData, BedrockBlockUpgradeSchema, BedrockItemUpgradeSchema dependencies from local repositories."
+echo "--- This allows you to perform integration tests using PocketMine-MP, without immediately publishing new versions of these libraries."
+
+cp composer.json composer-local-protocol.json
+cp composer.lock composer-local-protocol.lock
+
+export COMPOSER=composer-local-protocol.json
+composer config repositories.bedrock-protocol path ../deps/BedrockProtocol
+composer config repositories.bedrock-data path ../deps/BedrockData
+composer config repositories.bedrock-block-upgrade-schema path ../deps/BedrockBlockUpgradeSchema
+composer config repositories.bedrock-item-upgrade-schema path ../deps/BedrockItemUpgradeSchema
+
+composer require pocketmine/bedrock-protocol:*@dev pocketmine/bedrock-data:*@dev pocketmine/bedrock-block-upgrade-schema:*@dev pocketmine/bedrock-item-upgrade-schema:*@dev
+
+composer install
+
+echo "--- Local dependencies have been successfully installed."
+echo "--- This script does not modify composer.json. To go back to the original dependency versions, simply run 'composer install'."
+