Add devcontainer configuration for Julia development environment

[Copilot]

Adds GitHub Codespaces/VS Code devcontainer configuration to standardize the development environment with Julia tooling and HDF5 utilities.

Configuration

.devcontainer/devcontainer.json

• Ubuntu 22.04 base image
• juliaup feature with channels 1.10 (LTS) and 1.12 (release), defaulting to 1.12
• Julia VS Code extension

.devcontainer/setup.sh

• Installs hexdump (bsdmainutils)
• Installs HDF5 CLI tools (hdf5-tools): h5dump, h5debug, h5stat, h5ls, h5diff
• Instantiates Julia package dependencies with error handling
• Verifies all installations

.devcontainer/README.md

• Documents included tools and usage
• Julia version switching instructions via juliaup

Usage

Open repository in Codespaces or VS Code Dev Containers for automatic environment provisioning.

Original prompt

Please add a proper agent and code space configuration that will install juliaup and julia v1.10 (lts) + v1.12 (release) along with hexdump , and hdf5 cli tools (h5dump, h5debug, h5stat and so on).

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.37%. Comparing base (d144466) to head (deb1aa6).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #709   +/-   ##
=======================================
  Coverage   87.37%   87.37%           
=======================================
  Files          37       37           
  Lines        4587     4587           
=======================================
  Hits         4008     4008           
  Misses        579      579           

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