feat!: rename @payloadcms/plugin-cloud (#8828)

BREAKING CHANGE: Rename `@payloadcms/plugin-cloud` to
`@payloadcms/payload-cloud`. Anyone using the existing plugin will need
to switch to using the new package.

## Why?

Since v3 will be using _fixed versioning_, all versions of `^3` must be
available. Unfortunately, the `@payloadcms/plugin-cloud` version has
already breached that version number. Renaming will allow it to be on
the same version as other monorepo packages.

Additionally, the name `plugin-cloud` is quite ambiguous and sometimes
is confused with `plugin-cloud-storage`, so using `payload-cloud` feels
like a good move to make this more evident.

packages/payload-cloud/.swcrc-build

@@ -0,0 +1,25 @@
+{
+  "$schema": "https://json.schemastore.org/swcrc",
+  "sourceMaps": true,
+  "exclude": ["/**/mocks", "/**/*.spec.ts"],
+  "jsc": {
+    "target": "esnext",
+    "parser": {
+      "syntax": "typescript",
+      "tsx": true,
+      "dts": true
+    },
+    "transform": {
+      "react": {
+        "runtime": "automatic",
+        "pragmaFrag": "React.Fragment",
+        "throwIfNamespace": true,
+        "development": false,
+        "useBuiltins": true
+      }
+    }
+  },
+  "module": {
+    "type": "es6"
+  }
+}