Bisq developer docs

• CONTRIBUTING.md: Understand Bisq's contribution and compensation guidelines
• build.md: Build and run Bisq at the command line
• dependency-signature-report.md: Dependency PGP signature verification status
• reproducible-builds: Reproducible release-build goals, usage, technical details, and platform notes
• idea-import.md: Import Bisq sources into IntelliJ IDEA
• Makefile: (new) Set up a self-contained local Bisq network on Bitcoin regtest
• dev-setup.md: (deprecated) Set up a self-contained local Bisq network on Bitcoin regtest
• dao-setup.md: (deprecated) Set up a complete Bisq DAO development environment
• burning-man-address-list.md: Understand the versioned Burning Man DPT receiver allowlist
• burningman/filter-controlled-btc-fee-receiver-routing.md: Filter-controlled BTC trade-fee receiver routing for Burning Man
• testing.md: Learn about the Bisq testing process and how you can contribute.

Looking for user-facing documentation? See https://bisq.wiki.