Inline completions in @vscode/chat-lib (#2131)

* Include inline completions in @vscode/chat-lib

* Follow type imports, * exports without "as", and jsxImportSource pragmas for dependency extraction

* update @vscode/chat-lib test configuration

* update chat lib extraction with new path and add context setup for lib

* initial stubs for inline completions test

* round trip test for getInlineCompletions

* remove unused path mappings

* fix type import

* send only original event names for chat-lib telemetry

* fix wasm loading in chat-lib

* have locateFile default to the current dir if the expected parent directory cannot be found

* update to use service injection with completions in chat-lib

* update citation and ExP handling for completions in chat-lib

* hook up enhanced telemetry for chat-lib

* add missing tsx package

* update post-install script to work with pre-built and unbuilt versions of chat-lib and add missing completions dependencies

* remove unneeded try/catch block

* correct typo

* generate package-lock from correct npm version

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Co-authored-by: Christof Marti <chrmarti@microsoft.com>