tig: add page (#2303)

pages/common/tig.md

@@ -0,0 +1,27 @@
+# tig
+
+> A text-mode interface for Git.
+
+- Show the sequence of commits starting from the current one in reverse chronological order:
+
+`tig`
+
+- Show the history of a specific branch:
+
+`tig {{branch}}`
+
+- Show the history of specific files or directories:
+
+`tig {{path1}} {{path2}} ...`
+
+- Show the difference between two references (such as branches or tags):
+
+`tig {{base_ref}}..{{compared_ref}}`
+
+- Display commits from all branches and stashes:
+
+`tig --all`
+
+- Start in stash view, displaying all saved stashes:
+
+`tig stash`