transcrypt: add page (#3952)

Co-authored-by: Starbeamrainbowlabs <sbrl@starbeamrainbowlabs.com>

pages/common/transcrypt.md

@@ -0,0 +1,24 @@
+# transcrypt
+
+> Transparently encrypt files within a git repository.
+> More information: <https://github.com/elasticdog/transcrypt>.
+
+- Initialize an unconfigured repository:
+
+`transcrypt`
+
+- List the currently encrypted files:
+
+`git ls-crypt`
+
+- Display the credentials of a configured repository:
+
+`transcrypt --display`
+
+- Initialize and decrypt a fresh clone of a configured repository:
+
+`transcrypt --cipher={{cipher}}`
+
+- Rekey to change the encryption cipher or password:
+
+`transcrypt --rekey`