feat: Ability to `fetch` without authentication

[kysely]

• fetch options take new authenticate boolean parameter to optionally disable authentication (which stays enabled by default)

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closes #31

[kysely]

@janhalama I think we should also disable authentication for some already existing calls. I listed all the existing abstracted calls to Store and marked which can use disabled auth. I checked against Brain, but can you please revise?

• 🔴 createProvider
• ✅ findAllProviders
• ✅ findOneProvider
• 🔴 createProfile
• ✅ parseProfile
• ✅ getProfile
• ✅ getProfileSource
• ✅ getProfileAST
• 🔴 createMap
• ✅ parseMap
• ✅ getMap
• ✅ getMapSource
• ✅ getMapAST

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🔴 will authenticate ✅ can fetch without authentication

[janhalama]

@janhalama I think we should also disable authentication for some already existing calls. I listed all the existing abstracted calls to Store and marked which can use disabled auth. I checked against Brain, but can you please revise?

You are right, only create* endpoints require authentication at the moment.

[kysely]

@janhalama Done, please review :)