move dependencies to devDependencies (#1758)

* move dependencies to devDependencies

* typescript was already in devDependencies
* dependencies used only by the frontend widget are only devDependencies,
  and are not required by the backend (at runtime):
  - react
  - react-dom
  - matrix-widget-api
  - url-join
  - classnames
* cross-fetch is only used in tests

Signed-off-by: Дамјан Георгиевски <gdamjan@gmail.com>

* Create 1758.misc

---------

Signed-off-by: Дамјан Георгиевски <gdamjan@gmail.com>
Co-authored-by: Will Hunt <will@half-shot.uk>

changelog.d/1758.misc

@@ -0,0 +1 @@
+Remove some build-time dependencies from the runtime dependency list.

package.json

@@ -35,8 +35,6 @@
     "@sentry/node": "^6.17.9",
     "ajv": "^8.12.0",
     "bluebird": "^3.7.2",
-    "classnames": "^2.3.2",
-    "cross-fetch": "^3.1.5",
     "diff": "^5.1.0",
     "escape-string-regexp": "^4.0.0",
     "extend": "^3.0.2",
@@ -46,18 +44,13 @@
     "matrix-appservice-bridge": "^9.0.1",
     "matrix-bot-sdk": "npm:@vector-im/matrix-bot-sdk@^0.6.6-element.1",
     "matrix-org-irc": "^2.1.0",
-    "matrix-widget-api": "^1.4.0",
     "nopt": "^6.0.0",
     "p-queue": "^6.6.2",
     "pg": "^8.8.0",
     "quick-lru": "^5.1.1",
-    "react": "^18.2.0",
-    "react-dom": "^18.2.0",
     "sanitize-html": "^2.7.2",
     "semver": "^7.5.4",
     "typed-emitter": "^2.1.0",
-    "typescript": "^5.0.4",
-    "url-join": "^5.0.0",
     "winston": "^3.8.2",
     "winston-daily-rotate-file": "^4.7.1"
   },
@@ -83,21 +76,27 @@
     "@typescript-eslint/parser": "^5.38.0",
     "@vitejs/plugin-react": "^3.0.1",
     "autoprefixer": "^10.4.13",
+    "classnames": "^2.3.2",
+    "cross-fetch": "^3.1.5",
     "eslint": "^8.24.0",
     "eslint-plugin-jest": "^27.2.3",
     "eslint-plugin-react": "^7.32.2",
     "eslint-plugin-react-hooks": "^4.6.0",
     "homerunner-client": "^0.0.6",
     "jasmine": "^3.99.0",
     "jest": "^29.1.1",
+    "matrix-widget-api": "^1.4.0",
     "node-mocks-http": "^1.12.1",
     "nyc": "^15.1.0",
     "postcss": "^8.4.21",
     "proxyquire": "^2.1.3",
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0",
     "tailwindcss": "^3.2.4",
     "ts-jest": "^29.1.0",
     "ts-node": "^10.9.1",
     "typescript": "^5.0.4",
+    "url-join": "^5.0.0",
     "vite": "^4.0.4"
   }
 }