Cloud Instance Metadata Model - Add Instance Data & Fix issues in Azure Instance Type handling

[gnanakeethan]

Types of changes

• [x] Enhancement (project structure, spelling, grammar, formatting)
• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [x] My code follows the code style of this project.
• [x] My change requires a change to the documentation.
• [x] I have updated the documentation accordingly.
• [x] I have added tests to cover my changes.
• [x] All new and existing tests passed.

A description of the changes proposed in the Pull Request

Update latest information for Azure instances from the Google sheet at https://docs.google.com/spreadsheets/d/1l_VOOhd6F0lHfjTjqT7jRKyvIDnwA-Wco6otTqqnm_Q

Fix Proper handling of Azure Instances that utilise constrained CPUs.

Standardize AWS Instance Metadata extracted from https://github.com/cloud-carbon-footprint/ccf-coefficients/blob/main/data/aws-instances.csv