Use nx for running dev tasks (#32476)

* Use nx for running dev tasks

Initially only build & start
This enables caching, i.e. if you made no changes to shared-components then it can skip that build and speed up your iteration cycle time

nx will also be used for our release tooling down the line

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Drop `concurrently` - we no longer use it

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Make knip happier

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Also use nx tasks for jest & tsc

so that SC gets built as needed

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Add missing @nx/jest plugin

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Fix prebuild:rethemendex for Windows

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Fix prebuild:rethemendex for Windows

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Add prepack script to package.json

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Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

knip.ts

@@ -63,4 +63,7 @@ export default {
         "@types/sdp-transform",
     ],
     ignoreExportsUsedInFile: true,
+    nx: {
+        config: ["nx.json", "project.json", "{apps,packages,modules}/**/project.json", "package.json"],
+    },
 } satisfies KnipConfig;