Release v0.1.4

[0ngk]

This pull request introduces improved validation for Discord webhook payloads, specifically targeting duplicate component IDs in typed Components V2 payloads. It also updates dependencies to the latest versions and clarifies documentation regarding the library's unofficial status and new validation features.

Validation improvements:

• Added detection and reporting of duplicate non-zero component IDs in typed Components V2 payloads, including detailed error messages with duplicate paths. This is implemented via a new duplicate validation utility and integrated into the component validation logic. (src/kitazith/internal/validation/component.gleam [1] [2] src/kitazith/internal/validation/duplicate.gleam [3] src/kitazith/validation.gleam [4] [5] test/kitazith/validation_test.gleam [6]
• Refactored duplicate attachment filename detection to use the new generic duplicate finder, simplifying the code and improving maintainability. (src/kitazith/internal/validation/attachment.gleam [1] [2]

Documentation updates:

• Added a disclaimer clarifying that kitazith is an unofficial library not endorsed by Discord. (README.md README.mdR12-R16)
• Updated documentation to describe the new duplicate component ID validation and clarified the behavior of raw component payloads. (README.md [1] [2] [3]

Dependency and version updates:

• Updated the default Gleam version and dependencies to latest stable releases, including gleam_stdlib 1.0.0 and gleeunit 1.10.0. (gleam.toml [1] [2] examples/kitazith_example/gleam.toml [3] .github/workflows/gleam-bootstrap.yml [4] examples/kitazith_example/.github/workflows/test.yml [5] examples/kitazith_example/manifest.toml [6]
• Bumped the kitazith version to 0.1.4. (gleam.toml [1] examples/kitazith_example/manifest.toml [2]

These changes strengthen payload validation, improve error reporting, and keep the project dependencies current.

[0ngk]

LGTM