Add default env for script run

[ffjlabo]

What this PR does / why we need it:

Added default env value for the deployment information (such as deployment id, application id...)

example of app.pipecd.yaml

apiVersion: pipecd.dev/v1beta1
kind: KubernetesApp
spec:
  name: script-run-like-jenkins
  labels:
    env: example
    team: product
  pipeline:
    stages:
      - name: K8S_CANARY_ROLLOUT
        with:
          replicas: 10%
      - name: SCRIPT_RUN
        with:
          run: |
            echo $SR_DEPLOYMENT_ID
            echo $SR_APPLICATION_ID
            echo $SR_APPLICATION_NAME
            echo $SR_TRIGGERED_AT
            echo $SR_TRIGGERED_COMMIT_HASH
            echo $SR_REPOSITORY_URL
            echo $SR_RAW
            echo $
          env:
            REPOSITORY_URL: "https://github.com/pipecd/pipecd"
          onRollback: |
            echo $SR_DEPLOYMENT_ID
            echo $SR_APPLICATION_ID
            echo $SR_APPLICATION_NAME
            echo $SR_TRIGGERED_AT
            echo $SR_TRIGGERED_COMMIT_HASH
            echo $SR_REPOSITORY_URL
            echo $SR_RAW
...

Which issue(s) this PR fixes:

Fixes #4814

Does this PR introduce a user-facing change?:

• How are users affected by this change:
• Is this breaking change:
• How to migrate (if breaking change):

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 34.61538% with 34 lines in your changes missing coverage. Please review.

Project coverage is 22.28%. Comparing base (ce9bc16) to head (980378d). Report is 1 commits behind head on master.

Files	Patch %	Lines
pkg/app/piped/executor/scriptrun/scriptrun.go	42.85%	23 Missing and 1 partial :warning:
pkg/app/piped/executor/kubernetes/rollback.go	0.00%	10 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5002      +/-   ##
==========================================
+ Coverage   22.25%   22.28%   +0.02%     
==========================================
  Files         519      519              
  Lines       57234    57284      +50     
==========================================
+ Hits        12739    12766      +27     
- Misses      43468    43492      +24     
+ Partials     1027     1026       -1     

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[ffjlabo]

oops, I forgot to add the Summary value. will try to add it 🙏 https://github.com/pipe-cd/pipecd/issues/4814#issuecomment-2060583328

[ffjlabo]

Added Summary value on 701bffa