️🛠 - Implement smoothed value class #32

Description

To avoid any clicks / unwanted aliasing while parameters are being changed very quickly due to modulation or automation, I need to implement a SmoothedValue class, directly inspired by the JUCE one, that smoothens the rate of change of parameters to avoid artifacts.

Requirements

• Implement class
• Add support for different curves (linear and multiplicative)
• Swap usage out in template plugin
• Test out in Daisy environment
• Inline functions as necessary
• Write tests
• Use proper include vs src directory structure
• Format code