Add release note for IntelliJ Toolkit v3.19.0

[Flanker32]

@wezhang Please provide details for the HDInsight part.

[t-rufang]

Thanks @Flanker32 ! Could you help to add the following items to release notes?

Added

• Support to link SQL Server Big Data cluster and submit Spark jobs
• Support WebHDFS storage type to submit job to HDInsight cluster with ADLS Gen 1 storage account

Changed

• Subscription ID need to be specified for ADLS Gen 1 storage type

Fixed

• [IntelliJ][webhdfs] Submit with invalid path will success #2840 Submit successfully with invalid path for WebHDFS storage type issue
• [IntelliJ][ReportedByUser] MS Azure Explorer - Error Loading gyystorage(default) #2747,[IntelliJ][ReportedByUser] MS Azure Explorer - Error Loading rolloutestfrcetest(default) #2801 Error loadig HDInsight node issue
• [IntellJ][Console] Interactive console with default spark type unspecified redirects to SparkJobRun #2714,[IntelliJ][Spark][serverless][RunConf]Warning use spark cluster when config use empty ADL account #2688,[IntelliJ][Spark on ADL] Submit spark on cosmos dialog pops twice #2669,[IntelliJ][RunConf] "Locally Run" configuration tab is disabled after starting a livy interactive console #2728,[IntelliJ][console]Main class is not required for livy interactive session console #2807,[IntelliJ][console]Use default local console config file to submit #2808,[IntelliJ][RunConf]Case of Main class name need to be consistent #2811,[IntelliJ][RunConf]Save config without main class will pops error dialog #2831 Spark Run Configuration validation issues
• [IntelliJ][RunConf]Set default spark type to aris, submit from script context menu will create config with "HDInsight" title #2810,[IntelliJ][Serverless]Submit to pops edit dialog for the second time, value do not populated #2760 Spark Run Configuration issues when created from context menu

[t-rufang]

BTW, we also need to add a new item to plugin description. We can change it in this PR or we can start a new PR, which way do you prefer? @Flanker32

Please find the following plugin description changes.

<li>Azure HDInsight: Create a Spark project, author and submit Spark jobs to HDInsight cluster; Monitor and debug Spark jobs easily. </li>
<li>SQL Server Big Data Cluster: Link to SQL Server Big Data Cluster; Create a Spark project, author and submit Spark jobs to cluster; Monitor and debug Spark jobs easily</li>

[Flanker32]

@t-rufang Description has been updated in this PR, as well as the release note.

[wezhang]

Thanks! LGTM! Ship it!