Add CLAUDE.md with project guidance for Claude Code

Introduces CLAUDE.md, a documentation file providing an overview of the AndroidSdk.Tools project, development commands, architecture, key classes, tool path resolution, CLI and test architecture, and important implementation details for contributors using Claude Code.

Merge pull request #44 from Redth/dev/redth/handle-cli-exit-for-emulator

Handle SIG INT/QUIT/TERM in Emulator AVD Start command

Merge pull request #43 from Redth/dev/redth/grpc-port

Add grpc flags for emulator start

Merge pull request #38 from Redth/dev/redth/license-commands

Start adding commands to manage licenses

Merge pull request #42 from Redth/dev/redth/sdk-download-correctness

More correct SDK Download

Merge pull request #40 from Redth/dev/redth/log-process-runner-stdio

Log underlying ProcessRunner stdio

Merge branch 'main' of https://github.com/Redth/Android.Tool

Merge pull request #33 from Redth/dev/mattleibow/cmd-ordering

Improve the cmdline-tools ordering

Merge pull request #32 from Redth/dev/redth/get-sdk-paths

Add commands to find the best SDK / JDK

Merge pull request #31 from Redth/dev/redth/fix-sdk-info-json

Fix JSON Output