Add Arch Linux and Manjaro Linux support to DependencyInstaller

[Bynaryman]

Description

Adds support for Arch Linux and Manjaro Linux distributions to the dependency installer script.

Changes

• Added detection for "Arch Linux" and "Manjaro Linux" in etc/DependencyInstaller.sh
• Provides installation instructions for base packages via pacman
• Builds common dependencies from source (cmake, bison, swig, boost, eigen, cudd, lemon, spdlog, gtest, abseil)
• Builds or-tools 9.11 from source (no prebuilt binaries available for Arch-based distributions)

Testing

• Tested on Manjaro Linux (kernel 6.16.8, Arch-based)
• Successfully built OpenROAD v2.0-25296-g0064f2d9f3
• All dependencies installed correctly to ~/.local
• System packages used: spdlog 1.15.3, fmt 11.2.0, yaml-cpp

Required System Packages

Users need to install base packages first:

sudo pacman -S --needed base-devel git cmake bison flex gcc clang libomp wget \
  unzip python python-pip tcl tk qt5-base qt5-charts qt5-imageformats \
  qt5-multimedia qt5-svg qt5-tools qt5-xmlpatterns ruby readline pcre \
  pcre2 zlib libffi boost eigen swig yaml-cpp pandoc groff help2man \
  lcov gdb llvm verilator klayout

Notes

• CI/Ubuntu-specific dependencies are skipped (only Ubuntu 22.04 is supported for CI)
• The script does not automatically install pacman packages (following Arch philosophy of user control)
• Uses _installCommonDev function to build dependencies from source
• or-tools build takes approximately 1-2 hours on typical systems

[maliberty]

Thanks for the contribution. Commits need to be signed with git commit -s. See the details link by DCO for more info on fixing this.

@sombraSoft please review as I don't know if this conflicts with your refactoring work.

[github-actions]

clang-tidy review says "All clean, LGTM! 👍"

[sombraSoft]

LGTM.
About the refactor, I can incorporate changes from this PR into the new script after this gets merged, no problem.
I just don't have a way to test this as I don't have access to an arch or manjaro machine.

[sombraSoft]

@Bynaryman
would you click on DCO check for this PR and go through the instructions in order to pass it? It's just a simple rebase
https://github.com/The-OpenROAD-Project/OpenROAD/pull/8609/checks?check_run_id=52494103345

[maliberty]

Accepting on faith as we don't test on these platforms.

[maliberty]

DCO needs to be fixed before we can merge.

[maliberty]

A timely update would be appreciated as we have a larger refactoring underway and would like to merge this first.