rustup-{set,self,completions,doc,override,component}: add page (#10729)

* rustup set: add page

* rustup self: add page

* rustup completions: add page

* rustup doc: add page

* rustup override: add page

* rustup component: add page

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Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

pages/common/rustup-set.md

@@ -0,0 +1,16 @@
+# rustup set
+
+> Alter `rustup` settings.
+> More information: <https://rust-lang.github.io/rustup>.
+
+- Set the default host triple:
+
+`rustup set default-host {{host_triple}}`
+
+- Set the default profile (`minimal` includes only `rustc`, `rust-std` and `cargo`, whereas `default` adds `rust-docs`, `rustfmt` and `clippy`):
+
+`rustup set profile {{minimal|default}}`
+
+- Set whether `rustup` should update itself when running `rustup update`:
+
+`rustup set auto-self-update {{enable|disable|check-only}}`