cargo-{help,version}: add page (#10712)

Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>

pages/common/cargo-help.md

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+# cargo help
+
+> Display help on `cargo` and its subcommands.
+> More information: <https://doc.rust-lang.org/cargo/commands/cargo-help.html>.
+
+- Display general help:
+
+`cargo help`
+
+- Display help for a subcommand:
+
+`cargo help {{subcommand}}`

pages/common/cargo-version.md

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+# cargo version
+
+> Display `cargo` version information.
+> More information: <https://doc.rust-lang.org/cargo/commands/cargo-version.html>.
+
+- Display the version of `cargo`:
+
+`cargo version`
+
+- Display additional build information:
+
+`cargo version --verbose`