Implements new indicator ForceIndex

[femtotrader]

Description

Implement new indicator - ForceIndex

Related Issue

Closes #8123

Motivation and Context

The ForceIndex indicator wasn't implemented

Requires Documentation Change

Doc for this indicator should be created but some docstring are written

How Has This Been Tested?

comparison with talipp computation of ForceIndex(20) of SPY candle data using generate_reference_data_from_talipp.py

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)

Checklist:

• My code follows the code style of this project.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.
• My branch follows the naming convention bug-<issue#>-<description> or feature-<issue#>-<description>

[femtotrader]

I have no idea why AcceptsRenkoBarsAsInput test is failing.
All others tests are passing

[jaredbroad]

Thanks, @femtotrader! For all the new PRs, can you please attach the source code of the comparison with Tulip, which generates the test data? We want to make sure all indicators have a third-party benchmark.

[femtotrader]

Indicators are tested against talipp (Python) not tulipindicators (which is a great technical indicator lib also... but in C)

Source code of the comparison with talipp have ever been merged in this PR
#8148
see generate_reference_data_from_talipp.py

I don't have an other (second) comparison script for tulipindicators .

[femtotrader]

Tulip indicators have a Python binding https://github.com/TulipCharts/tulipy which is marked as [NOT ACTIVELY MAINTAINED] ... so I don't know what to think about it.

This fork https://github.com/jesse-ai/tulipy (which have been used by Jesse bot) doesn't seems to be in a better state.

If comparison should be done against tulip indicators also we probably should rely on a C/C++ program for that purpose (which is an other story)

[Martin-Molinero]

Nice! Looks good, sharing minor requests 👍

[Martin-Molinero]

Thank you @femtotrader! Almost there 👍 minor comment