* More Options refactoring
Continues refactoring config classes to use the propert Options pattern where possible.
DataDirectories and DatabaseOptions are now configured the Options pattern and the BTCPayOptions is now moved alongside the other config setup
* Move COnfigure logic for Options to the Startup
This allows external integrations ( btcpay docker fragments) to highlight specific plugins as recommended to be installed. Also moved the remote option to a config option instead of a url query param to avoid messy situations where users could get deceived with a generated url. The dockerfiles also have an additional csproj to build and the plugin dir was renamed correctly from extensions to plugins
* BTCPay Extensions Part 2
This PR cleans up the extension system a bit in that:
* It renames the test extension to a more uniform name
* Allows yo uto have system extensions, which are extensions but bundled by default with the release (and cannot be removed)
* Adds a tool to help you generate an extension package from a csproj
* Refactors the UI extension points to a view component
* Moves some more interfaces to the Abstractions csproj
* Rename to plugins
* Remove SQLite as default option
IF MERGED, STORES WITH NO DB CONFIG WILL NOT START UNTIL CONFIG IS UPDATED WITH `sqlitefile=sqlite.db`
* remove sqlite conn string option
* toggle between abs path or relative for sqlite db
* Update DefaultConfiguration.cs
* BPU Prep Work Part2
* Adjust tests to use the hot wallet when registering deriv scheme
* Add amount to payment data view for onchain payments
* Make zone limits higher when in dev mode (for tests in next PR)
* Make IPaymentMethodDetails serialize/deserialize through payment type using the network
* Allow named settings through settings repo
* Refactor some extensions for next PR
* pr changes
* use json convert for now
* BitcoinSpecificBtcPayNetwork - abstract BTCPayNetwork
* some type fixes
* fix tests
* simplify fetching handler in invoice controller
* rename network base and bitcoin classes
* abstract serializer to network level
* fix serializer when network not provided
* fix serializer when network not provided
* fix serializer when network not provided
* try fixes for isolating pull request
* Part 1: OpenIddict - Minor Changes & Config prep
* add missing nuget
* pr changes
* pr fixes
* remove config for openid -- no need for it for now
* remove unused extension
* Add tests
* use pay tester http client
* check redirecturl in tests
