Impelement External Localization in the Language Management Module #11695

Basically implemented the necessary changes for https://github.com/abpframework/abp/pull/13845

Implemented ExternalLocalizationStore that gets localization resources from database. Introduced ExternalLocalizationResourceContributor that resource fills texts from database. ExternalLocalizationTextCache is very optimized (it has in-memory cache and distributed cache layers before database operations)
Introduced LocalizationResourceRecord and LocalizationTextRecord aggregate roots to store resources and texts in the database. Database table/collection names are AbpLocalizationResources and AbpLocalizationTexts.
Added sorting to language and language text application services (previously, some data was not properly sorted).
Created ExternalLocalizationSaver that automatically saves all localization resources and texts into the database, so other services (in a distributed system) can read them.
Introduced AbpExternalLocalizationOptions with SaveToExternalStore property to disable saving localization resources to database. It can be disabled for monolith applications. I don't want to make it disabled by default, because it has no big performance cost (well optimized and runs in a separate thread), but enabling it for all microservices can be forgotten.

LanguageTextConsts.MaxValueLength is changed from 64 megabytes to 64 kilobytes. Old value was unnecessary big. I don't know why I've done it like that before.
Added new entities, so EF Core applications should add a database migration.

14 Kasım, 2022