cargo-{clean,fmt}: add page (#10770)

* cargo clean: add page

* cargo fmt: add page

pages/common/cargo-clean.md

@@ -0,0 +1,20 @@
+# cargo clean
+
+> Remove generated artifacts in the `target` directory.
+> More information: <https://doc.rust-lang.org/cargo/commands/cargo-clean.html>.
+
+- Remove the entire `target` directory:
+
+`cargo clean`
+
+- Remove documentation artifacts (the `target/doc` directory):
+
+`cargo clean --doc`
+
+- Remove release artifacts (the `target/release` directory):
+
+`cargo clean --release`
+
+- Remove artifacts in the directory of the given profile (in this case, `target/debug`):
+
+`cargo clean --profile {{dev}}`