replace zodcli with commander (#570)

* replace zodcli with commander

* remove zod from package.json and package-lock and remove extra package-lock.json files

.changeset/friendly-tools-drive.md

@@ -0,0 +1,22 @@
+---
+'@cloudflare/next-on-pages': patch
+---
+
+make CLI arguments parsing more flexible
+
+prior to this change the CLI arguments parsing was not too flexible and forced a specific style
+
+For instance the only way to provide an argument for the `outdir` option was to pass it using `=` as in:
+
+```
+-o=./my-dir
+```
+
+or
+
+```
+--outdir=./my-dir
+```
+
+these changes make the CLI arguments parsing more flexible and don't enforce a specific style
+(`--outdir ./my-dir` now also works as you'd expect it to)