fix composer install when no ready-made-env exist

[shaal]

The Problem/Issue/Bug

Fixes https://github.com/shaal/DrupalPod/issues/64

How this PR Solves The Problem

• There was an issue with composer create-project, when there were no ready-made-envs for that drupal version.
• Adding DP_PHP_VERSION=8.0 in URL params (will become an official option when new browser extension is released)
• TODO: There's an issue with drush si, it doesn't connect to ddev's db, and try to work with drupal database instead.

Manual Testing Instructions

Open this URL - https://gitpod.io/#DP_PROJECT_NAME=drupal,DP_ISSUE_FORK=drupal-3257163,DP_ISSUE_BRANCH=feature%2F3257163-drupal_media_bundle,DP_PROJECT_TYPE=project_core,DP_MODULE_VERSION=10.0.x,DP_CORE_VERSION=10.0.x,DP_PATCH_FILE=,DP_INSTALL_PROFILE=standard,DP_PHP_VERSION=8.0/https://github.com/shaal/drupalpod/tree/drupal10

Related Issue Link(s)

Release/Deployment notes