DOP-4873: Dark Mode icons (#208)

* dark mode icons - still missing generative ai, and good versions of ktor and langchain

* replaced two funky icons - ktor-dark and langchain-dark

Author: mmeigs

source/develop-applications.txt

@@ -54,7 +54,7 @@ distributed database built for application developers.
    .. card::
       :headline: Drivers
       :url: https://www.mongodb.com/docs/drivers/
-      :icon: /images/icons/drivers.svg
+      :icon: atlas_drivers
       :icon-alt: Drivers LogoMark
 
       Connect your application to your database with one of our official
@@ -63,7 +63,7 @@ distributed database built for application developers.
    .. card::
       :headline: MongoDB for VS Code
       :url: https://www.mongodb.com/docs/mongodb-vscode/
-      :icon: /images/icons/vscode.svg
+      :icon: mdb_shell
       :icon-alt: VS Code LogoMark
 
       Find out how you can manage your data directly within your coding
@@ -72,7 +72,7 @@ distributed database built for application developers.
    .. card::
       :headline: MongoDB Manual
       :url: https://www.mongodb.com/docs/manual/
-      :icon: /images/icons/server.svg
+      :icon: mdb_database
       :icon-alt: Server LogoMark
 
       Learn MongoDB fundamentals such as querying data and ensuring high-availability,
@@ -81,7 +81,7 @@ distributed database built for application developers.
    .. card::
       :headline: Atlas Application Services
       :url: https://www.mongodb.com/docs/atlas/app-services/
-      :icon: /images/icons/realm.svg
+      :icon: realm_application_services
       :icon-alt: Realm LogoMark
 
       Build fully-managed apps with serverless functions, instant APIs,
@@ -90,7 +90,7 @@ distributed database built for application developers.
    .. card::
       :headline: MongoDB Analyzer
       :url: https://www.mongodb.com/docs/mongodb-analyzer/current/
-      :icon: /images/icons/analyzer.svg
+      :icon: general_features_build_faster
       :icon-alt: MongoDB Analyzer LogoMark
 
       Understand and troubleshoot queries and aggregations directly inside
@@ -99,7 +99,7 @@ distributed database built for application developers.
    .. card::
       :headline: Kafka Connector
       :url: https://docs.mongodb.com/kafka-connector/current/
-      :icon: /images/icons/kafka.svg
+      :icon: connectors_kafka
       :icon-alt: Kafka Connector LogoMark
 
       Build robust pipelines that stream events between applications with