Prepare CLI for move into mainline

packages/cli/docs/src/plugin/interface/command.md

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+# Command Functions
+
+> you can use command functions to execute some code & script
+
+Type Define:
+```
+Stdio: "Inherit" | "Piped" | "Null"
+```
+
+### `exec(commands: [string], stdout: Stdio, stderr: Stdio)`
+
+you can use this function to run some command on the current system.
+
+```lua
+local cmd = plugin.command
+
+manager.test = function ()
+    cmd.exec({"git", "clone", "https://github.com/DioxusLabs/cli-plugin-library"})
+end
+```
+> Warning: This function don't have exception catch.

packages/cli/docs/src/plugin/interface/dirs.md

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+# Dirs Functions
+
+> you can use Dirs functions to get some directory path
+
+
+### plugin_dir() -> string
+
+You can get current plugin **root** directory path
+
+```lua
+local path = plugin.dirs.plugin_dir()
+-- example: ~/Development/DioxusCli/plugin/test-plugin/
+```
+
+### bin_dir() -> string
+
+You can get plugin **bin** direcotry path
+
+Sometime you need install some binary file like `tailwind-cli` & `sass-cli` to help your plugin work, then you should put binary file in this directory.
+
+```lua
+local path = plugin.dirs.bin_dir()
+-- example: ~/Development/DioxusCli/plugin/test-plugin/bin/
+```
+
+### temp_dir() -> string
+
+You can get plugin **temp** direcotry path
+
+Just put some temporary file in this directory.
+
+```lua
+local path = plugin.dirs.bin_dir()
+-- example: ~/Development/DioxusCli/plugin/test-plugin/temp/
+```

packages/cli/docs/src/plugin/interface/log.md

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+# Log Functions
+
+> You can use log function to print some useful log info
+
+### Trace(info: string)
+
+Print trace log info
+
+```lua
+local log = plugin.log
+log.trace("trace information")
+```
+
+### Debug(info: string)
+
+Print debug log info
+
+```lua
+local log = plugin.log
+log.debug("debug information")
+```
+
+### Info(info: string)
+
+Print info log info
+
+```lua
+local log = plugin.log
+log.info("info information")
+```
+
+### Warn(info: string)
+
+Print warning log info
+
+```lua
+local log = plugin.log
+log.warn("warn information")
+```
+
+### Error(info: string)
+
+Print error log info
+
+```lua
+local log = plugin.log
+log.error("error information")
+```

packages/cli/docs/src/plugin/interface/network.md

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+# Network Functions
+
+> you can use Network functions to download & read some data from internet
+
+### download_file(url: string, path: string) -> boolean
+
+This function can help you download some file from url, and it will return a *boolean* value to check the download status. (true: success | false: fail)
+
+You need pass a target url and a local path (where you want to save this file)
+
+```lua
+-- this file will download to plugin temp directory
+local status = plugin.network.download_file(
+    "http://xxx.com/xxx.zip",
+    plugin.dirs.temp_dir()
+)
+if status != true then
+    log.error("Download Failed")
+end
+```
+
+### clone_repo(url: string, path: string) -> boolean
+
+This function can help you use `git clone` command (this system must have been installed git)
+
+```lua
+local status = plugin.network.clone_repo(
+    "http://github.com/mrxiaozhuox/dioxus-starter",
+    plugin.dirs.bin_dir()
+)
+if status != true then
+    log.error("Clone Failed")
+end
+```

packages/cli/docs/src/plugin/interface/os.md

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+# OS Functions
+
+> you can use OS functions to get some system information
+
+### current_platform() -> string ("windows" | "macos" | "linux")
+
+This function can help you get system & platform type:
+
+```lua
+local platform = plugin.os.current_platform()
+```

packages/cli/docs/src/plugin/interface/path.md

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+# Path Functions
+
+> you can use path functions to operate valid path string
+
+### join(path: string, extra: string) -> string
+
+This function can help you extend a path, you can extend any path, dirname or filename.
+
+```lua
+local current_path = "~/hello/dioxus"
+local new_path = plugin.path.join(current_path, "world")
+-- new_path = "~/hello/dioxus/world"
+```
+
+### parent(path: string) -> string
+
+This function will return `path` parent-path string, back to the parent.
+
+```lua
+local current_path = "~/hello/dioxus"
+local new_path = plugin.path.parent(current_path)
+-- new_path = "~/hello/"
+```
+
+### exists(path: string) -> boolean
+
+This function can check some path (dir & file) is exists.
+
+### is_file(path: string) -> boolean
+
+This function can check some path is a exist file.
+
+### is_dir(path: string) -> boolean
+
+This function can check some path is a exist dir.