helm/doris-operator: add support for deploy resources

[matiasbertani]

What problem does this PR solve?

Add support to setup resources in the dosris-operator helm chart.

Problem Summary:

The chart exposes resources configuration fields in values.yaml under dorisOperator.resources, but the Deployment template always used the "hard-coded" default values instead of the user-provided overrides.

This issue can be reproduced as follows:

ᐅ  helm template doris-operator ./doris-operator \
--set dorisOperator.resources.requests.memory=50Mi \
--set dorisOperator.resources.requests.cpu=200m \
| yq 'select(.kind == "Deployment") .spec.template.spec.containers[0].resources'

requests:
  cpu: 2
  memory: 4Gi
limits:
  cpu: 2
  memory: 4Gi

The values coming from values.yaml are ignored, and the Deployment always renders the default resources.

After applying the template changes included in this PR, Helm correctly renders the user-configured resources:

ᐅ  helm template doris-operator ./doris-operator \
--set dorisOperator.resources.requests.memory=50Mi \
--set dorisOperator.resources.requests.cpu=200m \   
| yq 'select(.kind == "Deployment") .spec.template.spec.containers[0].resources'

requests:
  cpu: 200m
  memory: 50Mi

This confirms that the chart now properly respects user-defined resource settings from values.yaml

Release note

Add support to setup resources in the dosris-operator helm chart.

Check List (For Author)

• Test

  • Regression test
  • Unit Test
  • Manual test (add detailed scripts or steps below)
  • No need to test or manual test. Explain why:
    • This is a refactor/code format and no logic has been changed.
    • Previous test can cover this change.
    • No code files have been changed.
    • Other reason

• Behavior changed:

  • No.
  • Yes.

• Does this need documentation?

  • No.
  • Yes.

Check List (For Reviewer who merge this PR)

• Confirm the release note
• Confirm test cases
• Confirm document
• Add branch pick label

[matiasbertani]

@catpineapple a couple of eyes in this PR will be appreciated too. Thanks!

[matiasbertani]

friendly ping @catpineapple

[matiasbertani]

desperate ping @catpineapple