Add better error handling for situation where destination path cannot be
created, for all project types. Also report back the Windows error
message which hopefully clarifies why the directory could not be
created.
Fixes: #14348
Fixes: KEYMAN-DEVELOPER-1P1
Fixes: KEYMAN-DEVELOPER-2SN
Test-bot: skip
The fields 'name', 'version', and 'rtl' were defined in the .kps file,
but were not actually used by the compiler, as kmc-package reads the
metadata from the keyboard file rather than relying on this data, which
often is out of date. This led to confusion for keyboard authors, so
this change removes that metadata from the package.
The one visible side-effect (apart from the data disappearing from
future .kps files) is that the package editor no longer shows this
metadata in the Keyboards view (but as it may be out-of-date, this is
probably a good thing).
Fixes: #13576Fixes: #13593
* Links welcome.htm in the package details for all project types
* Uses v17 project file format for new lexical model projects
* Nit: changes shortcut key for 'supported languages' from 'l' to 's'
to fix conflict with 'full copyright'.
Fixes: #13135
Fixes#10135.
Adds a new LDML Keyboard Project template and form, and allows
instantiation from kmconvert command-line and from the New Project
dialog in Keyman Developer IDE.
