refactor(args): Switch to pico-args in ra_tools

crates/ra_tools/src/help.rs

@@ -0,0 +1,56 @@
+pub fn print_global_help() {
+    println!(
+        "tasks
+
+USAGE:
+    ra_tools <SUBCOMMAND>
+
+FLAGS:
+    -h, --help       Prints help information
+
+SUBCOMMANDS:
+    format
+    format-hook
+    fuzz-tests
+    gen-syntax
+    gen-tests
+    install-ra
+    lint"
+    )
+}
+
+pub fn print_install_ra_help() {
+    println!(
+        "ra_tools-install-ra
+
+USAGE:
+    ra_tools.exe install-ra [FLAGS]
+
+FLAGS:
+        --client-code
+    -h, --help           Prints help information
+        --jemalloc
+        --server"
+    )
+}
+
+pub fn print_no_param_subcommand_help(subcommand: &str) {
+    println!(
+        "ra_tools-{}
+
+USAGE:
+    ra_tools {}
+
+FLAGS:
+    -h, --help       Prints help information",
+        subcommand, subcommand
+    );
+}
+
+pub fn print_install_ra_conflict() {
+    println!(
+        "error: The argument `--server` cannot be used with `--client-code`
+                    
+For more information try --help"
+    )
+}