fix(techdocs-cli): minimize dependencies

packages/techdocs-cli/package.json

@@ -28,87 +28,19 @@
     "techdocs": "bin/techdocs-cli"
   },
   "dependencies": {
-    "@backstage/config": "0.1.1-alpha.9",
-    "@backstage/config-loader": "^0.1.1-alpha.9",
-    "@hot-loader/react-dom": "^16.13.0",
-    "@lerna/package-graph": "^3.18.5",
-    "@lerna/project": "^3.18.0",
-    "@rollup/plugin-commonjs": "^12.0.0",
-    "@rollup/plugin-json": "^4.0.2",
-    "@rollup/plugin-node-resolve": "^7.1.1",
-    "@spotify/eslint-config": "^7.0.1",
-    "@sucrase/webpack-loader": "^2.0.0",
-    "@types/start-server-webpack-plugin": "^2.2.0",
-    "@types/webpack-env": "^1.15.2",
-    "@types/webpack-node-externals": "^1.7.1",
-    "bfj": "^7.0.2",
     "chalk": "^4.0.0",
-    "chokidar": "^3.3.1",
     "commander": "^4.1.1",
-    "css-loader": "^3.5.3",
     "dashify": "^2.0.0",
-    "diff": "^4.0.2",
-    "eslint": "^7.1.0",
-    "eslint-plugin-import": "^2.20.2",
-    "eslint-plugin-monorepo": "^0.2.1",
-    "fork-ts-checker-webpack-plugin": "^4.0.5",
-    "fs-extra": "^9.0.0",
-    "handlebars": "^4.7.3",
-    "html-webpack-plugin": "^4.3.0",
     "inquirer": "^7.0.4",
     "jest": "^26.0.1",
-    "jest-css-modules": "^2.1.0",
-    "jest-esm-transformer": "^1.0.0",
-    "mini-css-extract-plugin": "^0.9.0",
-    "ora": "^4.0.3",
-    "raw-loader": "^4.0.1",
-    "react": "^16.0.0",
-    "react-dev-utils": "^10.2.1",
-    "react-hot-loader": "^4.12.21",
-    "recursive-readdir": "^2.2.2",
-    "replace-in-file": "^6.0.0",
-    "rollup": "2.10.x",
-    "rollup-plugin-dts": "^1.4.6",
-    "rollup-plugin-esbuild": "^2.0.0",
-    "rollup-plugin-image-files": "^1.4.2",
-    "rollup-plugin-peer-deps-external": "^2.2.2",
-    "rollup-plugin-postcss": "^3.1.1",
-    "rollup-plugin-typescript2": "^0.26.0",
-    "start-server-webpack-plugin": "^2.2.5",
-    "style-loader": "^1.2.1",
-    "sucrase": "^3.14.1",
-    "tar": "^6.0.1",
-    "ts-jest": "^26.0.0",
-    "ts-loader": "^7.0.4",
-    "typescript": "^3.9.3",
-    "url-loader": "^4.1.0",
-    "webpack": "^4.41.6",
-    "webpack-dev-server": "^3.10.3",
-    "webpack-node-externals": "^1.7.2",
-    "yaml": "^1.10.0",
-    "yml-loader": "^2.1.0",
-    "yn": "^4.0.0"
+    "ora": "^4.0.3"
   },
   "devDependencies": {
-    "@types/diff": "^4.0.2",
-    "@types/fs-extra": "^9.0.1",
-    "@types/html-webpack-plugin": "^3.2.2",
-    "@types/http-proxy": "^1.17.4",
     "@types/inquirer": "^6.5.0",
-    "@types/mini-css-extract-plugin": "^0.9.1",
     "@types/node": "^13.7.2",
     "@types/ora": "^3.2.0",
-    "@types/react-dev-utils": "^9.0.4",
-    "@types/recursive-readdir": "^2.2.0",
-    "@types/rollup-plugin-peer-deps-external": "^2.2.0",
-    "@types/rollup-plugin-postcss": "^2.0.0",
-    "@types/tar": "^4.0.3",
-    "@types/webpack": "^4.41.7",
-    "@types/webpack-dev-server": "^3.10.0",
-    "del": "^5.1.0",
     "nodemon": "^2.0.2",
-    "ts-node": "^8.6.2",
-    "zombie": "^6.1.4"
+    "ts-node": "^8.6.2"
   },
   "files": [
     "bin",