Added plugin for supporting the Nim programming language

The plugin support:
- basic syntax highlighting
- indentation
- project management
- run and build configuration
- debugging
- code style

Change-Id: Idfbb02a11ed570c90149a54b726beb956712e2bd
Reviewed-by: David Schulz <david.schulz@theqtcompany.com>
Reviewed-by: hjk <hjk@theqtcompany.com>

src/plugins/plugins.qbs

@@ -40,6 +40,7 @@ Project {
         "macros/macros.qbs",
         "mercurial/mercurial.qbs",
         "modeleditor/modeleditor.qbs",
+        "nim/nim.qbs",
         "perforce/perforce.qbs",
         "projectexplorer/projectexplorer.qbs",
         "qbsprojectmanager/qbsprojectmanager.qbs",