mkcert: add page (#2934)

pages/common/mkcert.md

@@ -0,0 +1,24 @@
+# mkcert
+
+> Tool for making locally-trusted development certificates.
+> Homepage: <https://github.com/FiloSottile/mkcert>.
+
+- Install the local CA in the system trust store:
+
+`mkcert -install`
+
+- Generate certificate and private key for a given domain:
+
+`mkcert {{example.org}}`
+
+- Generate certificate and private key for the multiple domains:
+
+`mkcert {{example.org}} {{myapp.dev}} {{127.0.0.1}}`
+
+- Generate wildcard certificate and private key for a given domain and its subdomains:
+
+`mkcert {{"*.example.it"}}`
+
+- Uninstall the local CA:
+
+`mkcert -uninstall`