add simpler api for applying text replacements

[alex3683]

The bloated text library should be deprecated in favor of a simpler api for applying replacements within a string.

[alex3683]

Implemented on master, targeted version v0.12.0.

Upgrade Information

A new method string.format() for substitution and formatting of placeholder values was introduced. The api doc can be found here: https://github.com/LaxarJS/laxar/blob/master/docs/api/lib/utilities/string.md#format
Additionally the method string.createFormatter() for custom formatting purposes was introduced. The api doc can be found in the same document linked to above.

Deprecation notice

Everything under lib/text is now deprecated. Instead the new string.format() and string.createFormatter() in lib/utilities should be used.