Fix add_barcode_flavor issues

[nukappa]

• if sample_id is missing, by default it adds the flavor to all samples in the project. The message should list the sample_ids that have changed, currently it says and for samples: ['']
• if random names are inputted, it doesn't throw an error but instead returns a normal message like Setting barcode flavor: scrnaseq for projects: ['KO'] and for samples: ['this_shouldnt_run']
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SUCCESS: barcode_flavor set successfully.

[nukappa]

• Similar issues for the projects set_run_mode
• Please change SUCCESS: run mode: scrnaseq seted succesfully. to SUCCESS: run mode: scrnaseq set succesfully.