libcimpp v2.2.0

What's Changed

• Remove deprecated IEC CIM github actions by @m-mirz in #28
• Rebase libxml branch, update arabica and fix packaging by @m-mirz and @tom-hg57 in #29
• Fix class and attribute types by @tom-hg57 in #30
• Add generation of string classes for cpp by @tom-hg57 in #32
• Add cgmes3 by @tom-hg57 in #34
• Prevent cutting of string values by @tom-hg57 in #35
• Add profile class and writer by @tom-hg57 in #36
• Build all versions in GitHub workflows by @tom-hg57 in #37
• Prepare release v2.2.0 by @tom-hg57 in #38

Full Changelog: v2.1...v2.2.0