SSO stores token file in random location

[justinmk3]

Problem

SSO auth implementation stores the cache token to whatever directory it happens to be installed to:

language-servers/server/device-sso-auth-lsp/src/language-server/sso/builderId.ts

Line 15 in 17a6f6f

const TOKEN_CACHE_DIR = path.join(__dirname, '.cache')

Expected behavior

• Token should be stored in the (quasi) standard ~/.aws/sso/... location.
• Ideally, it should also try to re-use token already found in that location which may have been set by other tools.