[22761] Add builtin @feed annotation

[MiguelCompany]

Description

This adds @Feed as a builtin annotation. Will be used to mark interface operations (and their parameters) as feeds.

Note: Tests will be added later to the intermediate branch, but I checked manually that the following IDL is correctly parsed with the changes in this PR:

exception OverflowException
{
};

interface Calculator
{
    long addition(in long value1, in long value2) raises (OverflowException);

    long subtraction(in long value1, in long value2) raises (OverflowException);
	
    @feed long fibonacci_seq(in long n_results) raises (OverflowException);
	
    long sum_all(@feed in long value) raises (OverflowException);

    @feed long accumulator(@feed in long value) raises (OverflowException);
};

Contributor Checklist

• Commit messages follow the project guidelines.
• NO: Tests that thoroughly check the new feature have been added/Regression tests checking the bug and its fix have been added; the added tests pass locally
  • Tests will be added for the full feature later
• NO: New feature has been documented/Current behavior is correctly described in the documentation.
  • Documentation will be added for the full feature later
• N/A: Applicable backports have been included in the description.

Reviewer Checklist

• The PR has a milestone assigned.
• The title and description correctly express the PR's purpose.
• Check contributor checklist is correct.
• Check CI results: changes do not issue any warning.
• Check CI results: failing tests are unrelated with the changes.