fix: exit with clear error when --waitFor value is not a valid number#271

lbroudoux merged 1 commit intomicrocks:mastermicrocks/microcks-cli:masterfrom

mugiwaraluffy56:fix/waitfor-invalid-number-exits-cleanlymugiwaraluffy56/microcks-cli:fix/waitfor-invalid-number-exits-cleanlyCopy head branch name to clipboard