feat: Include Gate Valve function

[johanlrdahl]

The flow rate for the gate valve formula should be implemented and made available in Charts.
The current volumetric rate is valid for choke valves and it requires a Cv curve. For gate valves, this does not require a Cv curve (much simpler) and can be easily implemented.

Description

Added function for flow through gate valves

Motivation and Context

See Jira AH-1888

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• Refactor (non-breaking change which improves implementation)
• Performance (non-breaking change which improves performance. Please add associated performance test and results)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Non-functional change (xml comments/documentation/etc)

Contributor Checklist:

• My code follows the code style of this project.
• I have added an example of my new feature and included it in the documentation.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.
• My Pull Request name follows the naming convention fix: <description>, feat: <description>, etc.

Reviewer Checklist for Charts compliant functions:

• The docstrings of the new function follow the contributing guidelines.
• The new function is professionally documented
• The new function and associated scripts are covered by one or more unit tests and code coverage did not decrease.
• The new function is accompanied by an example and it is included in the Gallery of Charts.
• The new function is reviewed in Chromatic. Access the storybook build results url and comment, approve or deny.
• All function inputs, arguments, and outputs have a supported data type and have human readable names.
• No code language is included in the description of the function or parameters (e.g use "polynomial order" instead of "poly_order")

[github-actions]

Unit Test Results

0 tests  ±0   0 ✅ ±0   0s ⏱️ ±0s
0 suites ±0   0 💤 ±0 
0 files   ±0   0 ❌ ±0 

Results for commit e94d286. ± Comparison against base commit edc7afc.

♻️ This comment has been updated with latest results.

[johanlrdahl]

@simone, @skepticalcat , I expect this to need a few iterations. Mainly:

1. Make sure we have defined the correct input parameters to the function
2. Then verify the calculations are correct
3. Add test cases.