Install php-spx on lando

.lando.yml

  appserver:
    build_as_root:
      - 'mkdir -p /usr/src/php/ext && cd /usr/src/php/ext && git clone https://github.com/NoiseByNorthwest/php-spx.git spx && cd spx/ && git checkout release/latest'
      - 'cd /usr/src/php/ext/spx && phpize && ./configure'
      - docker-php-ext-install spx
      - echo 'spx.http_enabled=1' >> /usr/local/etc/php/conf.d/docker-php-ext-spx.ini
      - echo 'spx.http_key="dev"' >> /usr/local/etc/php/conf.d/docker-php-ext-spx.ini
      - echo 'spx.http_ip_whitelist="*"' >> /usr/local/etc/php/conf.d/docker-php-ext-spx.ini