chore: scaffold SPFx solution with ui-kit

Clean SPFx 1.22 (heft) web part template with @tnsu/ui-kit wired in.
Starting point for merging the stroy-bot-* repositories.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

.npmignore

@@ -0,0 +1,22 @@
+# Ignore everything by default
+**
+
+# Use negative patterns to bring back the specific things we want to publish
+!/bin/**
+!/dist/**
+!/EULA/**
+!/lib/**
+!ThirdPartyNotice.txt
+
+# Ignore certain files in the above folders
+/dist/*.stats.*
+/dist/**/*.js.map
+/lib/**/*.js.map
+/lib/**/test/**
+
+# NOTE: These don't need to be specified, because NPM includes them automatically.
+#
+# package.json
+# README (and its variants)
+# CHANGELOG (and its variants)
+# LICENSE / LICENCE