Resolve include directives for Rng.parse_rnc

[HassanAkbar]

fixes #26

[Copilot]

Pull request overview

This PR updates the in-memory RNC parsing entry point (Rng.parse_rnc) to resolve include directives when a location is provided, bringing it in line with Rng.parse_file and addressing issue #26.

Changes:

• Route RncParser.parse / Rng.parse_rnc through IncludeProcessor#parse_content as the canonical parsing pipeline.
• Extend IncludeProcessor to optionally resolve includes for in-memory content when location is provided.
• Add specs to validate include resolution parity between parse_rnc(..., location: ...) and parse_file.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
spec/rng/schema_spec.rb	Adds integration-style specs for include resolution from in-memory RNC.
spec/rng/parse_rnc_spec.rb	Adds focused unit specs for .parse_rnc behavior with/without location.
lib/rng/rnc_parser.rb	Delegates parse to IncludeProcessor to centralize parsing behavior.
lib/rng/parse_rnc.rb	Removes the old placeholder wrapper implementation.
lib/rng/include_processor.rb	Adds parse_content and refactors include resolution flow for in-memory parsing.
lib/rng.rb	Adds Rng.parse_rnc(rnc, location: nil) entry point using IncludeProcessor.

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