Migrate sunshine docs from old documentation website

Author: Apanatshka

content/howtos/command-line/index.md

@@ -0,0 +1,26 @@
+# Running Spoofax from the Command-Line
+
+You can run parts of a Spoofax language from the command-line with the Sunshine command-line interface. This is a separate Java application that loads a Spoofax language and gives the following options:
+
+* Parse, to parse a single file and print the AST
+* Analyze, to parse and analyze a single file and print the analyzed AST
+* Transform, to parse, analyze and transform a single file and print the analyzed AST
+* Build, to run a builder on a single file, which will parse, possibly analyze, transform and print the result
+
+Use the `--help` flag for details.
+
+## Installation
+
+On any release notes page you can find the Sunshine JAR under Command-line utilities. This is an executable JAR with a command-line interface.
+
+## Nailgun
+
+If you use the command-line interface often or multiple times you may wish to speed up the process.
+Every time to run Sunshine, there is overhead of the JVM startup time and the loading time for the Spoofax language.
+
+If you wish to speed this up you can use the `server` command of Sunshine. This starts up a Nailgun server.
+Install the [Nailgun client](https://www.martiansoftware.com/nailgun/), then use `ng sunshine --help` to see the commands available.
+
+The commands on the server are slightly different from the normal commands as loading a language is a separate command now.
+Languages are still loaded lazily, so the first time a language is used it will take longer, but after that things should run noticeably faster.
+

content/howtos/statix/index.md

@@ -152,13 +152,11 @@ nav:
       - howtos/installation/install-from-source.md
       - howtos/installation/install-spoofax-on-macos-arm.md
     - Static Semantics:
-      - howtos/statix/index.md
       - howtos/statix/debugging.md
       - howtos/statix/migrating-from-nabl2.md
       - howtos/statix/migrating-to-concurrent-solver.md
       - howtos/statix/signature-generator.md
     - Transformation:
-      - howtos/stratego/index.md
       - howtos/stratego/generate-signature.md
       - howtos/stratego/run-stratego-programs.md
       - howtos/stratego/generate-pretty-printer.md
@@ -169,6 +167,8 @@ nav:
       - howtos/stratego/stratego-1-to-2.md
     - Editor Services:
       - howtos/editor-services/rename-refactoring.md
+    - Command-Line Interface:
+      - howtos/command-line/index.md
     - Development:
       - howtos/development/index.md
       - howtos/development/spoofax-dev-requirements.md