Adopt solidus_dev_support in all extensions

[elia]

This gem should be introduced to most extensions in order to both standardize and gather feedback by trying it IRL.

solidusio-contrib

@vassalloandrea:

• solidus_abandoned_carts
• solidus_asset_variant_options
• solidus_comments
• solidus_digital
• solidus_drip
• solidus_easypost
• solidus_editor
• solidus_expedited_exchanges

@MinasMazar:

• solidus_gdpr
• solidus_geocoding
• solidus_globalize
• solidus_multi_domain

@elia:

• solidus_static_content
• solidus_print_invoice
• solidus_log_viewer
• solidus_handling_fees

@aldesantis:

• solidus_reports
• solidus_reviews
• solidus_sale_prices
• solidus_searchkick
• solidus_shipping_labeler
• solidus_shipwire
• solidus_signifyd
• solidus_sitemap

@blocknotes:

• solidus_papertrail
• solidus_product_assembly
• solidus_recently_viewed
• solidus_product_feed
• solidus_prototypes
• solidus_quiet_logistics
• solidus_redirector
• solidus_related_products
• solidus_tax_cloud
• solidus_volume_pricing
• solidus_virtual_gift_card
• solidus_importer
• solidus_social
• solidus_subscriptions

solidusio

@aldesantis:

• solidus_affirm
• solidus_auth_devise

@blocknotes:

• solidus_paypal_braintree
• solidus_i18n

@spaghetticode:

• solidus_stripe

[aldesantis]

This needs to wait until the other issues in the 1.0.0 milestone are completed.