Introduce dynamic EMA parameter that evolves with pool liquidity

[0xcacti]

Description

The EMA parameter (alpha) is more crucial when the pool has low liquidity. As the pool liquidity increases, the EMA parameter can be relaxed, until we reach a saturation point, where sufficient liquidity means we can eliminate the EMA altogether (i.e. alpha=1.0). We have a mathematical function that takes the pool liquidity scale as input, and provides the appropriate alpha value (described in detail in the corresponding documentation)

Related Issue(s)

n/a

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Other (please describe):

Breaking Change

n/a

Checklist

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have run cargo fmt and cargo clippy to ensure my code is formatted and linted correctly
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

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Additional Notes