Add persistent storage with portable mode support

- Added store.ts for centralized config management
- Portable mode: config saved next to exe (data/ folder)
- Normal mode: config saved in %APPDATA%
- Auto-detect portable mode via portable.txt or data/ folder
- Window bounds persistence
- Error log persistence
- Settings page shows app info and storage mode

build-output/builder-debug.yml

@@ -0,0 +1,19 @@
+x64:
+  firstOrDefaultFilePatterns:
+    - '!**/node_modules'
+    - '!assets{,/**/*}'
+    - '!build-output{,/**/*}'
+    - dist/**/*
+    - index.html
+    - package.json
+    - '!**/*.{iml,hprof,orig,pyc,pyo,rbc,swp,csproj,sln,suo,xproj,cc,d.ts,mk,a,o,forge-meta,pdb}'
+    - '!**/._*'
+    - '!**/electron-builder.{yaml,yml,json,json5,toml,ts}'
+    - '!**/{.git,.hg,.svn,CVS,RCS,SCCS,__pycache__,.DS_Store,thumbs.db,.gitignore,.gitkeep,.gitattributes,.npmignore,.idea,.vs,.flowconfig,.jshintrc,.eslintrc,.circleci,.yarn-integrity,.yarn-metadata.json,yarn-error.log,yarn.lock,package-lock.json,npm-debug.log,appveyor.yml,.travis.yml,circle.yml,.nyc_output,.husky,.github,electron-builder.env}'
+    - '!.yarn{,/**/*}'
+    - '!.editorconfig'
+    - '!.yarnrc.yml'
+  nodeModuleFilePatterns:
+    - '**/*'
+    - dist/**/*
+    - index.html

build-output/win-unpacked/LICENSE.electron.txt

@@ -0,0 +1,21 @@
+Copyright (c) Electron contributors
+Copyright (c) 2013-2020 GitHub Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

build-output/win-unpacked/portable.txt

@@ -0,0 +1 @@
+Portable Mode Enabled

build-output/win-unpacked/vk_swiftshader_icd.json

@@ -0,0 +1 @@
+{"file_format_version": "1.0.0", "ICD": {"library_path": ".\\vk_swiftshader.dll", "api_version": "1.0.5"}}

electron-builder.json

@@ -3,7 +3,7 @@
   "appId": "com.ipmonitor.app",
   "productName": "IP Monitor",
   "directories": {
-    "output": "release",
+    "output": "build-output",
     "buildResources": "assets"
   },
   "files": [