Add error message to prompt users to reauthenticate with Copilot

Improvements

• CoreOfficial Copilot plugin
• CoreAdjust LSP wording to better encourage users to fix issues
• CoreFix plan path permissions
• CoreAdd check in case provider doesn't exist in models list
• CoreAdjust GitLab logic in provider configuration
• CoreAdd AWS Web Identity Token File support for Bedrock@bainos
• CoreAdd Chocolatey and Scoop to OpenCode upgrade methods@itsrainingmani
• CoreRemove duplicate path import in session module@CasualDeveloper
• TerminalImprove question prompt UX in TUI@kitlangton