Add support of pipeline variables to include

What does this MR do and why?

Related to #337633 (closed)

When we first implemented the usage of variables in include (#219065 (closed)), we only supported limited types of variables. We also supported to use these variables in include:rules (#276515 (closed)).

In this MR, we are adding the support of the following variables;

• Trigger variables
• Scheduled pipeline variables
• Manual pipeline run variables
• Pipeline predefined variables

How to set up and validate locally

# .gitlab-ci.yml

include:
  - local: deploys.yml
    rules:
      - if: $CI_COMMIT_BRANCH == "main"

test:
  stage: test
  script: exit 0

# deploys.yml

deploy:
  stage: deploy
  script: echo deploy

Run in the feature branch;

Run in the main branch;

MR acceptance checklist

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