Add id check to auto checker

[jjw24]

id needs to be unique as is used for matching existing plugin to download/update. Since this info is manually added into plugin.json, let's enforce it with auto checker here.

Need to also take into consideration of default flow launcher plugins' ids as well.

[jjw24]

id needs to be unique as is used for matching existing plugin to download/update. Since this info is manually added into plugin.json, let's enforce it with auto checker here.

Done by #50

[jjw24]

I didnt close this because the part where we include flow's default plugin ids as well is not done. This helps if anyone would copy those plugins as a starter but forgets to change the id, or this is overkill?

[Zeroto521]

Base on #71, there also need to sync upstream plugin id to manifest .

Daily update Id is fine. But how to handle this condition. Upstream plugin id was changed to new one and this new id was already in manifest.

[jjw24]

No, if u look at the pr, the ID submitted was different to the repo at the very start.

So we just need to validate on new plugin submission to check against the id in the plugin repo. ID is the unique identifier so should never change after first init.

[Zeroto521]

I forget once a plugin id is changed flow would treat that plugin to a new plugin.
When above condition happens id should be updated by plugin owner not us.