yadm: add pages (#13920)

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>
Co-authored-by: Wiktor Perskawiec <git@spageektti.cc>

pages/common/yadm.md

@@ -0,0 +1,33 @@
+# yadm
+
+> A dotfiles manager that works by using `git`.
+> Some subcommands such as `init`, `clone`, `push`, and `pull` have their own usage documentation.
+> More information: <https://yadm.io/docs/overview>.
+
+- Override the `yadm` directory. `yadm` stores its configurations relative to this directory:
+
+`yadm --yadm-dir`
+
+- Override the `yadm` data directory: `yadm` stores its data relative to this directory:
+
+`yadm --yadm-data`
+
+- Override the location of the `yadm` repository:
+
+`yadm --yadm-repo`
+
+- Override the location of the `yadm` configuration file:
+
+`yadm --yadm-config`
+
+- Override the location of the `yadm` encryption configuration:
+
+`yadm --yadm-encrypt`
+
+- Override the location of the `yadm` encrypted files archive:
+
+`yadm --yadm-archive`
+
+- Override the location of the `yadm` bootstrap program:
+
+`yadm --yadm-bootstrap`