feat: nginx loadbalancing validation

[buchdag]

No description provided.

[Copilot]

Pull request overview

Adds validation and normalization for NGINX load-balancing directives.

Changes:

• Implements parsers for supported load-balancing methods.
• Adds table-driven parser tests.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
internal/template/nginx_validation.go	Adds load-balancing validation logic.
internal/template/nginx_validation_test.go	Tests accepted and rejected directives.

Suppressed comments (1)

internal/template/nginx_validation.go:112

• The NGINX hash directive requires a key (hash key [consistent]), so accepting the one-element case returns a bare hash directive that NGINX will reject when validating the generated configuration. Return an error when the key is missing and update the test that currently accepts this input.

	case 1:
		// no parameters

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