added various case conversion commands for str. Added the inflection … (#2363)

* added various case conversion commands for str. Added the inflection crate as a dependency

* lighten the restriction on the inflector dependency

* publishing the case commands

* fix typo

* fix kebab case test

* formatting

crates/nu-cli/tests/commands/str_/mod.rs

@@ -97,6 +97,26 @@ fn upcases() {
     })
 }
 
+#[test]
+fn camelcases() {
+    Playground::setup("str_test_3", |dirs, sandbox| {
+        sandbox.with_files(vec![FileWithContent(
+            "sample.toml",
+            r#"
+                    [dependency]
+                    name = "THIS_IS_A_TEST"
+                "#,
+        )]);
+
+        let actual = nu!(
+            cwd: dirs.test(),
+            "open sample.toml | str camel-case dependency.name | get dependency.name | echo $it"
+        );
+
+        assert_eq!(actual.out, "thisIsATest");
+    })
+}
+
 #[test]
 fn converts_to_int() {
     let actual = nu!(