[codespaces] vscode extension crashes if specified log output location doesn't work

[martinlippert]

I am running a Codespaces workspace from my local VSCode install and the Spring Boot extension crashes with this:

Redirecting log output to: /Users/mlippert/Desktop/vscode-logs.txt
Exception in thread "main" java.io.FileNotFoundException: /Users/mlippert/Desktop/vscode-logs.txt (No such file or directory)
	at java.base/java.io.FileOutputStream.open0(Native Method)
	at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298)
	at java.base/java.io.FileOutputStream.<init>(FileOutputStream.java:237)
	at org.springframework.ide.vscode.commons.util.LogRedirect.logFileStream(LogRedirect.java:38)
	at org.springframework.ide.vscode.commons.util.LogRedirect.bootRedirectToFile(LogRedirect.java:24)
	at org.springframework.ide.vscode.boot.app.BootLanguageServerBootApp.main(BootLanguageServerBootApp.java:103)
[Info  - 10:27:27 AM] Connection to server got closed. Server will restart.

The reason seems to be that my local preferences contain this setting:

"spring-boot.ls.logfile": "/Users/mlippert/Desktop/vscode-logs.txt"

But this path is obviously not valid inside of a Codespaces workspace. So instead of crashing the extension we need to check if this path exists and if not, send back an error message without crashing the whole extension.

[martinlippert]

This can easily be reproduced without Codespaces if you specify a non-existing path in the settings.

[BoykoAlex]

Fixed with 5e6b3f1