Add quotes to Windows paths

[OrigamiDev-Pete]

Resolves errors that occur when the %_KOTLIN_HOME% path has a space in it, e.g. (C:\Program Files\kotlinc\bin) See errors:

Adding quotes around these two path variables handles the spaces.

[ivankatalenic]

This is still a problem, and the solution proposed by the original author still works.

Can this be escalated and merged because it prevents Windows users from using Kotlin compiler on the CLI if the compiler is placed on a path that contains spaces.