More efficient flat file list format and various UX improvements (#3)

This is a major upgrade with assorted things included.

- Navigation flows improved, search appears in URL history, cleared when navigating to another folder
- More efficient file list format for faster loads
- Efficient updates, never re-send full root another time (except at connection)
- Large number of watching and filelist updates (inotify issues remain)
- File size coloring
- Fixed ZIP generation random glitches (thread race condition)
- Code refactoring, cleanup, typing fixes
- More tests

Reviewed-on: #3

frontend/package.json

@@ -0,0 +1,59 @@
+{
+  "name": "cista-frontend",
+  "version": "0.0.0",
+  "private": true,
+  "scripts": {
+    "dev": "vite",
+    "build": "run-p type-check \"build-only {@}\" --",
+    "preview": "vite preview",
+    "test:unit": "vitest",
+    "build-only": "vite build",
+    "type-check": "vue-tsc --noEmit -p tsconfig.vitest.json --composite false",
+    "lint": "eslint . --ext .vue,.js,.jsx,.cjs,.mjs,.ts,.tsx,.cts,.mts --fix --ignore-path .gitignore",
+    "format": "prettier --write src/"
+  },
+  "dependencies": {
+    "@imengyu/vue3-context-menu": "^1.3.3",
+    "@vueuse/core": "^10.4.1",
+    "esbuild": "^0.19.5",
+    "lodash": "^4.17.21",
+    "lodash-es": "^4.17.21",
+    "pinia": "^2.1.6",
+    "pinia-plugin-persistedstate": "^3.2.0",
+    "unplugin-vue-components": "^0.25.2",
+    "vite-plugin-rewrite-all": "^1.0.1",
+    "vite-svg-loader": "^4.0.0",
+    "vue": "^3.3.4",
+    "vue-router": "^4.2.4"
+  },
+  "devDependencies": {
+    "@rushstack/eslint-patch": "^1.3.3",
+    "@tsconfig/node18": "^18.2.2",
+    "@types/jsdom": "^21.1.3",
+    "@types/lodash-es": "^4.17.10",
+    "@types/node": "^18.17.17",
+    "@vitejs/plugin-vue": "^4.3.4",
+    "@vue/eslint-config-prettier": "^8.0.0",
+    "@vue/eslint-config-typescript": "^12.0.0",
+    "@vue/test-utils": "^2.4.1",
+    "@vue/tsconfig": "^0.4.0",
+    "babel-eslint": "^10.1.0",
+    "eslint": "^8.52.0",
+    "eslint-plugin-vue": "^9.18.1",
+    "jsdom": "^22.1.0",
+    "npm-run-all2": "^6.0.6",
+    "prettier": "^3.0.3",
+    "typescript": "~5.2.0",
+    "vite": "^4.4.9",
+    "vitest": "^0.34.4",
+    "vue-tsc": "^1.8.11"
+  },
+  "prettier": {
+    "semi": false,
+    "singleQuote": true,
+    "trailingComma": "none",
+    "arrowParens": "avoid",
+    "endOfLine": "lf",
+    "printWidth": 88
+  }
+}