Cache idf_versions.json on build time so we have target selection availible in case of offline installation#282

Hahihula wants to merge 1 commit intomasterespressif/idf-im-ui:masterfrom

EIM-370-do-not-crash-without-internet-connectionespressif/idf-im-ui:EIM-370-do-not-crash-without-internet-connectionCopy head branch name to clipboard