Preparation to have SAML config file

[javuto]

Preparing things to have a single YAML configuration file across all services. #644

[Copilot]

Pull request overview

This PR standardizes configuration naming conventions across services to prepare for a unified YAML configuration file. The changes focus on correcting a typo in Kafka configuration and aligning field naming to use camelCase in YAML/JSON tags.

Key changes:

• Fixed "BoostrapServer" typo to "BootstrapServer" in Kafka configuration
• Standardized YAML tag naming from lowercase to camelCase for SAML and Kafka configurations
• Added SAML configuration to AdminConfiguration struct

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
pkg/config/types.go	Fixed Kafka configuration typo, standardized YAML tags to camelCase, and added SAML config to AdminConfiguration
pkg/logging/kafka.go	Updated reference to use corrected BootstrapServer field name
pkg/config/flags.go	Updated flag destination to use corrected BootstrapServer field name
cmd/tls/main.go	Renamed function and extracted YAML config type to constant, added unmarshal step
cmd/api/main.go	Renamed function, extracted YAML config type to constant, added unmarshal step, and corrected flag initialization call
cmd/admin/main.go	Renamed function, extracted YAML config type to constant, and added unmarshal step

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