Update jBASE syntax handling

[stuboydl]

Various feature additions

Extension.ts

• Add formatStructLeft flag to allow formatting for better vscode folding (eg label: <> return)
• Add rStructLeft to formatter to asign left aligned keywords for folding when formatStructLeft is set
• Add jBASE transaction keywords transtart/transend/transabort to formatter rBlockStart

Language-configuration.json

• Add single & double quotes to surroundingPairs to allow fast quoting a selected string
• Update folding markers with MV comment markers to allow vscode folding regions. !!#region, !!#endregion

jBASE.tmLanguage.json syntax

• general enhancements to jbase syntax handling
• add keywords try/end try/catch/exec/in/throw
• add jabba patterns
• add block comment pattern
• add numeric pattern
• add pattern for $ifdef, $endif, etc. compiler switch

General

• Changelog: most recent at top (per https://dev.to/jonasbn/why-and-how-should-you-write-a-good-change-log-4kp0)

[stuboydl]

PR #196 Code folding formatting addresses

• Add formatStructure flag to allow formatting for better vscode folding (eg label: <> return)
• Add rFormatStructure to formatter to asign left aligned keywords for folding when formatStructure is true
• Update folding markers with MV comment markers to allow vscode folding regions. !!#region, !!#endregion