add additional options for creating/maintaining non dacpac/bacpac databases

[nkavadias]

Current CreateDb function leaves a lot to be desired.
In a real environment, if databases are to be created/maintained using xDatabase then it should support more than just $databaseName. Some optional parameters as per T-SQL CREATE DATABASE / ALTER DATABASE I'd like to add are:

• collation_name
• containment_option
• recovery_option
• filespec for primary data file & log file
  • name
  • size
  • maxsize
  • filegrowth

Should I be contributing changes/ using https://github.com/PowerShell/xSQLServer instead?