Show summarized field definition information on hover

[NeoKaios]

Improved textDocument/hover lsp request with the following:

• Elementary vars show their fully qualified name, usage and picture string
• Structure vars show their fully qualified name and size in bits
• Conditions (88) show their value and the var they apply to
• Table indexes show their length and the main field info
• Renames show info about the variable they rename
• Redefines show their own var info and the name of the var they redefines

[CLAassistant]

All committers have signed the CLA.