Improvements to showing bugs and bug fixes

• d72ce7b: Add switch statement support
• a2c6c76: Add error messages to the asset inspector
• d3dbc79: Improve compile times for compiling all scripts and now make all scripts compile by default to avoid the potential for weird behavior
• d3dbc79: Add option to go back to the old behavior of only compiling the script that was modified
• d3dbc79: Fix bug that only allowed the first syntax error to print from AST parsing
• bd0a905: Fix a bug with using GetComponent<T>() with user types on gameobjects rather then Components, reported by @zander123p and @VowganDesign
• f72479e: Make errors have a their [UdonSharp] tag highlighted in pink