docs: init `cli` docs

docs/cli/.gitignore

@@ -0,0 +1 @@
+book

docs/cli/book.toml

@@ -0,0 +1,6 @@
+[book]
+authors = ["YuKun Liu"]
+language = "en"
+multilingual = false
+src = "src"
+title = "Dioxus Cli"

docs/cli/src/SUMMARY.md

@@ -0,0 +1,3 @@
+# Summary
+
+- [Chapter 1](./chapter_1.md)

docs/cli/src/chapter_1.md

@@ -0,0 +1 @@
+# Chapter 1