Change "no label_options in config" behavior to use local default lab…

[sebastianbarry]

…el options

confirmHelper.ts

• Removed archaic behavior or using old Angular i18nUtils module to get the filename of the translations' trip_confirm_options.json file
• The "else" default "no label_options found in config" behavior is almost identical to the if(appConfig.label_options), but it just uses the default label options URL at label-options.json.sample
• Pulled the language-specific text handling behavior out of the if statement, because either way (label_options or no label_options) the JSON data model will look the same

label-options.json.sample

• Created new file
• Replaces trip_confirm_options.json.sample (this location in confirmHelper.ts was the only place in the codebase using this file)
• Modeled after https://github.com/e-mission/nrel-openpath-deploy-configs/blob/main/label_options/example-program-label-options.json
• Only has translations for EN and ES

trip_confirm_options.json.sample

• Removed this file

[sebastianbarry]

Closing in favor of #1055