Audio effects

[BrennoCaldato]

Adding new audio effects to Openshot

• Compressor: Reduce the volume of loud sounds or amplify quiet sounds.
• Delay: Adjust the synchronism between the audio and video track.
• Distortion: Alter the audio by clipping the signal.
• Echo: Reflection of sound with a delay after the direct sound.
• Expander: Louder parts of audio becomes relatively louder and quieter parts becomes quieter.
• Noise: Random signal having equal intensity at different frequencies.
• ParametricEQ: Filter that allows you to adjust the volume level of a frequency in the audio track.
• Robotization: Transform the voice present in an audio track into a robotic voice effect.
• Whisperization: Transform the voice present in an audio track into a whispering voice effect.

Icons:

[jonoomph]

I've updated translation templates with new audio effects, and added updated icons.

[jonoomph]

LGTM!