feat: automatically generate declaration files

[joshvermaire]

Few things of note:

1. There's a few extra declarations here, like NamiBridge and NamiManager and other interfaces like INami, INamiCustomerManager, etc. If these aren't expected we may need make some modifications if they're not wanted to be in the declaration output.
2. A few others like ICampaignManager aren't exported
3. A lot of type declarations were moved to the types.d.ts file

[namidan]

@joshvermaire doesn't seem like the added declarations are of much consequence, since the publicly facing names seem to alias to them e.g. iNami. Does this seem right to you?

[joshvermaire]

I made a script to check the differences between the two, this is what I found:

The main branch does not include the following type declarations: [
'NamiBridge',
'INami',
'NamiMLManagerBridge',
'INamiMLManager',
'RNNamiCampaignManager',
'NamiCampaignManagerEvents',
'ICampaignManager',
'RNNamiCustomerManager',
'NamiCustomerManagerEvents',
'INamiCustomerManager',
'RNNamiEntitlementManager',
'NamiEntitlementManagerEvents',
'INamiEntitlementManager',
'RNNamiManager',
'INamiManager',
'NamiPurchaseManagerBridge',
'RNNamiPurchaseManager',
'NamiPurchaseManagerEvents',
'INamiPurchaseManager',
'NamiPaywallManagerEvents',
'ServicesEnum',
'INamiPaywallManager',
'NamiSKU',
'NamiSKUType',
'AppleProduct',
'GoogleProduct',
'AmazonProduct',
'NamiCampaignRuleType',
'AccountStateAction'
]

This update_declaration_files branch is missing these declarations: [
'NamiCampaignRule',
'NamiPaywallEvent',
'NamiPaywallComponentChange'
]

NamiCampaignRule is exported under NamiCampaignRuleType which is being used so that seems fine.
NamiPaywallEvent is used in ios/NamiCampaignManagerBridge.swift and android/src/main/java/com/nami/reactlibrary/NamiCampaignManagerBridge.kt. So I will add this declaration back in but it would be good if it could be confirmed that it works properly as I'm not 100% sure how (and if) these two files interact with these types.
NamiPaywallComponentChange is not directly used in this repo outside of the NamiPaywallEvent.

I'm assuming it's ok if the type declarations that were missing from the main branch are included in new builds, but if we want to formally exclude those we would need to add that.

[joshvermaire]

Here's a link to the script if you ever need it: https://gist.github.com/joshvermaire/15ccd0e0e88baaba90daac76be5ccfd5

You can run it via ts-node compare_declaration_files.ts

[joshvermaire]

@joshvermaire doesn't seem like the added declarations are of much consequence, since the publicly facing names seem to alias to them e.g. iNami. Does this seem right to you?

Yes, I think that's right. I don't see it as an issue. In the future if you wanted to 'clean things up' we could make some changes to exclude them, but I don't see it causing any issues