Initial scaffold for AiFoundation plugin

Add initial project scaffold for the AiFoundation plugin. Includes Gradle build files and wrapper, settings, .editorconfig, .gitignore, GPLv3 LICENSE, GitHub Actions CI/CD workflows, plugin Java source (AiFoundationPlugin.java), plugin resources (plugin.yaml, logo), a unit test, and a Vue-based UI app under ui/ with its configs and assets. README updated.

Author: ruibaby

.editorconfig

@@ -0,0 +1,20 @@
+name: CD
+
+on:
+  release:
+    types:
+      - published
+
+jobs:
+  cd:
+    uses: halo-sigs/reusable-workflows/.github/workflows/plugin-cd.yaml@v4
+    permissions:
+      contents: write
+    with:
+      ui-path: "ui"
+      pnpm-version: 10
+      node-version: 24
+      java-version: 21
+      # Remove skip-appstore-release and set app-id if you want to release to the App Store
+      skip-appstore-release: true
+      # app-id: app-xyz

.github/workflows/cd.yaml

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+name: CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  ci:
+    uses: halo-sigs/reusable-workflows/.github/workflows/plugin-ci.yaml@v4
+    with:
+      ui-path: "ui"
+      pnpm-version: 10
+      node-version: 24
+      java-version: 21

.github/workflows/ci.yaml

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+### Maven
+target/
+logs/
+!.mvn/wrapper/maven-wrapper.jar
+
+### Gradle
+.gradle
+/build/
+/out/
+!gradle/wrapper/gradle-wrapper.jar
+bin/
+
+### Node
+node_modules/
+
+### STS
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA
+.idea
+*.iws
+*.iml
+*.ipr
+log/
+
+### NetBeans
+nbproject/private/
+build/
+nbbuild/
+dist/
+nbdist/
+.nb-gradle/
+
+### Mac
+.DS_Store
+*/.DS_Store
+
+### VSCode
+*.project
+*.factorypath
+.vscode
+!.vscode/extensions.json
+
+### Compiled class file
+*.class
+
+### Log file
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+### BlueJ files
+*.ctxt
+
+### Package Files
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+### Local file
+application-local.yml
+application-local.yaml
+application-local.properties
+
+/ui/build/
+/workplace/
+/src/main/resources/console/