Initial conda configurations directories

Signed-off-by: Jose Luis Rivero <[email protected]>

conda/README.md

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+# Conda configurations and tools for Gazebo
+
+This repository hosts the Conda related configurations and files used
+by the Gazebo project.
+
+> [!IMPORTANT]
+> Currently the Gazebo project is only using Conda for supporting the
+> build on Windows. The builds or Conda packages can perfectly work
+> on different platforms but the core team is not actively testing
+> them.
+
+## The envs/ (environments) directory
+
+The environments directory hosts the Conda environments and Pixi projects
+configurations used for different combinations of Gazebo distributions.
+
+## Create environments with Pixi
+
+[Pixi](https://prefix.dev/) can be used to recreate a Gazebo development
+environment. Navigate to the right subdirectory under `envs/` where the
+`pixi.lock` and `pixi.toml` files are located and run:
+
+```bash
+pixi install --locked
+```
+
+## Environments available
+
+### The legacy environment
+
+The legacy environment has the goal of replacing the previous vcpkg
+installation used by the Gazebo Buildfarm for testing Garden, Harmonic
+and Ionic. The software versions chosen are mostly based on the Ubuntu
+Jammy versions.

conda/envs/legacy/gz-environment.yaml

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+name: gazebo
+channels:
+  - conda-forge
+# plaforms works on conda-lock https://github.com/conda/conda-lock?tab=readme-ov-file#platform-specification
+platforms:
+  - win-64
+dependencies:
+  # Not in vcpkg
+  - python=3.9
+  - colcon-common-extensions
+  - vcstool
+  - ruby=3.2  # version in noble
+  - pkg-config  # for ogre-next detection in rendering
+  - cmake=3.28.3  # version in Noble 
+  - dartsim=6.13.2  # version in Noble
+  #
+  # X stack on Linux
+  # - libglu
+  # - libglvnd-devel-cos7-x86_64
+  # - libwebsockets
+  # - mesa-libegl-devel-cos7-x86_64
+  # - mesa-libgl-devel-cos7-x86_64
+  # - vulkan-headers
+  #
+  # VCPKG_DEPENDENCIES_LEGACY block:
+  - assimp
+  - boost-cpp=1.78.0
+  - bullet-cpp
+  - libccd-double
+  #  - console-bridge  #not in conda
+  - cppzmq
+  - cuda
+  - curl
+  - dlfcn-win32  # win
+  - eigen
+  - fcl=0.7.0
+  - ffmpeg
+  - freeimage
+  - gdal
+  - gflags
+  - glib
+  - gts
+  - jsoncpp
+  - yaml
+  - libzip
+  - ogre=1.10.12.1
+  - ogre-next=2.3.3  # version in Noble
+  - openssl
+  - protobuf
+  - libprotobuf
+  - pybind11
+  - qt-main
+  - qwt
+  - libsqlite
+  - tinyxml2
+  - zeromq