feat: Add support for Azure workload identity for Git and OCI repositories.

[jagpreetstamber]

PR implements Azure workload identity authentication mechanism for authenticating with the Azure Git and OCI repositories

Azure Workload Identity enables the credential free authentication for Azure customers, enabling this feature will remove the credential management overhead from customers using argo on Azure Kubernetes clusters.

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this does not need to be in the release notes. Support for Azure Entra workload identity  #13334
• The title of the PR states what changed and the related issues number (used for the release note).
• The title of the PR conforms to the Toolchain Guide
• I've included "Closes [ISSUE #]" or "Fixes [ISSUE #]" in the description to automatically close the associated issue.
• I've updated both the CLI and UI to expose my feature, or I plan to submit a second PR with them.
• Does this PR require documentation updates?
• I've updated documentation as required by this PR.
• I have signed off all my commits as required by DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My build is green (troubleshooting builds).
• My new feature complies with the feature status guidelines.
• I have added a brief description of why this PR is necessary and/or what this PR solves.
• Optional. My organization is added to USERS.md.
• Optional. For bug fixes, I've indicated what older releases this fix should be cherry-picked into (this may or may not happen depending on risk/complexity).

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[codecov]

Codecov Report

Attention: Patch coverage is 64.57680% with 113 lines in your changes missing coverage. Please review.

Project coverage is 55.24%. Comparing base (d7ccf47) to head (88ea8cf).

Files with missing lines	Patch %	Lines
util/helm/creds.go	79.48%	24 Missing and 8 partials ⚠️
util/helm/cmd.go	52.50%	14 Missing and 5 partials ⚠️
pkg/apis/application/v1alpha1/repository_types.go	22.22%	12 Missing and 2 partials ⚠️
util/git/creds.go	65.00%	11 Missing and 3 partials ⚠️
util/util.go	0.00%	8 Missing ⚠️
util/git/client.go	0.00%	7 Missing ⚠️
util/db/repository_secrets.go	57.14%	4 Missing and 2 partials ⚠️
util/workloadidentity/workloadidentity.go	73.33%	4 Missing ⚠️
util/helm/client.go	76.92%	1 Missing and 2 partials ⚠️
cmd/argocd/commands/repo.go	0.00%	2 Missing ⚠️
... and 4 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #21118      +/-   ##
==========================================
+ Coverage   53.26%   55.24%   +1.98%     
==========================================
  Files         337      339       +2     
  Lines       57055    57318     +263     
==========================================
+ Hits        30391    31666    +1275     
+ Misses      24012    22935    -1077     
- Partials     2652     2717      +65     

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