Add platform/mattermost-redux package for publishing (#30020)

* Replace key-mirror with mattermost-redux/utils/key_mirror

At some point, we made our own version for mattermost-redux with proper type definitions
but we seem to have forgotten to use that everywhere in the web app.

* Remove Rudder reference from mattermost-redux

* Remove Giphy API from mattermost-redux

* Remove mattermost-webapp refernces from Client and Types packages

* Create platform/mattermost-redux without moving its source files

* Don't build mattermost-redux automatically

* Copy changes to package.json from platform/mattermost-redux to other packages

The changes to the typesVersions and exports fields are to make it
easier for tooling to know to make it so that importing a folder imports
the index file inside that folder since that's not standard to all
CommonJS packages.

The added type field is just a good pracice.

* Explicitly type re-exported selectors

For some reason, the types generated by the previous version of this didn't work
when mattermost-redux was built as a standalone package. Explicitly typing these
is a bit more verbose, but it fixes things.

* Fix import loop in selectors introduced by last commit

* Update package versions to 10.6.0

* Add explicit dependencies to mattermost-redux package

* Remove check and run scripts from mattermost-redux package

* Revert changes to NOTICE.txt

webapp/platform/mattermost-redux/tsconfig.json

@@ -0,0 +1,32 @@
+{
+    "compilerOptions": {
+        "allowJs": true,
+        "module": "commonjs",
+        "moduleResolution": "node",
+        "target": "ES2022",
+        "lib": [
+            "ES2022"
+        ],
+        "declaration": true,
+        "strict": true,
+        "resolveJsonModule": true,
+        "isolatedModules": true,
+        "esModuleInterop": true,
+        "allowSyntheticDefaultImports": true,
+        "jsx": "react",
+        "outDir": "./lib",
+        "rootDir": "../../channels/src/packages/mattermost-redux/src",
+        "composite": true,
+        "useUnknownInCatchVariables": false,
+        "tsBuildInfoFile": "tsconfig.tsbuildinfo",
+        "paths": {
+            "mattermost-redux/*": ["../../channels/src/packages/mattermost-redux/src/*"]
+        }
+    },
+    "include": [
+        "../../channels/src/packages/mattermost-redux/src/**/*"
+    ],
+    "exclude": [
+        "../../**/*.test.*"
+    ]
+}