Python Project Properties - Update: Source: Encodings

[ebresie]

As of v0.3.0, when open project properties, many of the field do not populate correctly and have placeholder logics. This issue is to resolve this. This is broken down into each category to focus the work to smaller chunks

2. Python Project Properties: Source: Encodings - Loading in correct encodings and allow select, store, and loading from properties

This updates further relative to the initial project properties added as part of #20 updates.