refactor(justfile): split justfile into small files (#42)

- build.just
- debug.just
- dev.just
- gen.just
- pkg.just
- test.just

justfiles/dev.just

@@ -0,0 +1,24 @@
+# run iris
+[group('dev')]
+run:
+    @./iris
+
+# initialize default config file
+[group('dev')]
+config-init:
+    @./iris config init
+
+# re-build and reload iris
+[group('dev')]
+[linux, macos]
+reload:
+    @go build -o iris ./cmd/iris
+    @if [ -f ~/.local/bin/iris ]; then rm -f ~/.local/bin/iris && cp ./iris ~/.local/bin/iris; fi
+    @if [ -n "${IRIS_PID:-}" ]; then kill -USR1 $IRIS_PID 2>/dev/null || true; fi
+    @if [ -z "${IRIS_FD:-}" ]; then ./iris; fi
+
+# copy to local bin
+[group('dev')]
+copy:
+    @rm ~/.local/bin/iris
+    @cp ./iris ~/.local/bin/iris