added font 'sitelen pona luka pi jan janpa onjon' (#169)

* added font 'sitelen pona luka pi jan janpa onjon'

* added "all ku suli" feature

* changed the font name to nasin janpa

* changed "fontfile" url to github pages

* Update nasin janpa.toml

---------

Co-authored-by: Jaemin Park <30309207+JammPark@users.noreply.github.com>
Co-authored-by: kala Asi <28656100+AcipenserSturio@users.noreply.github.com>

fonts/metadata/nasin janpa.toml

@@ -0,0 +1,27 @@
+#:schema ../../api/generated/font.json
+id        = "nasin janpa"
+name      = "nasin janpa"
+filename  = "nasin-janpa.ttf"
+creator   = ["jan Janpa Onjon"]
+license   = "OFL"
+ligatures = true
+ucsur     = true
+writing_system = "sitelen pona"
+
+last_updated = "2025-01"
+version      = "1"
+
+features = [
+  "ASCII transcription and codepoints",
+  "UCSUR-compliant",
+  "supports cartouches",
+  "all ku suli",
+  "Extendable pi, kepeken, lon, sama, tan, tawa"
+]
+
+style = "handwritten"
+
+[links]
+fontfile = "https://omga-dev.github.io/nasin-janpa/nasin-janpa.ttf"
+repo     = "https://github.com/omga-dev/nasin-janpa"
+webpage  = "https://omga-dev.github.io/nasin-janpa"