prqlc: add page (#9921)

* Create prqlc.md

* Rename prqlc.md to prqlc.md

* Update pages/common/prqlc.md

Co-authored-by: Maximilian Roos <5635139+max-sixty@users.noreply.github.com>

* Update pages/common/prqlc.md

Co-authored-by: Axel Navarro <navarroaxel@gmail.com>

* Update pages/common/prqlc.md

Co-authored-by: Axel Navarro <navarroaxel@gmail.com>

* Apply suggestions from code review

Co-authored-by: Axel Navarro <navarroaxel@gmail.com>

* Update pages/common/prqlc.md

---------

Co-authored-by: Maximilian Roos <5635139+max-sixty@users.noreply.github.com>
Co-authored-by: Axel Navarro <navarroaxel@gmail.com>
Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

pages/common/prqlc.md

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+# prqlc
+
+> PRQL compiler.
+> PRQL is a modern language for transforming data - a simple, powerful, pipelined SQL replacement.
+> More information: <https://prql-lang.org>.
+
+- Run the compiler interactively:
+
+`prqlc compile`
+
+- Compile a specific `.prql` file to stdout:
+
+`prqlc compile {{path/to/file.prql}}`
+
+- Compile a `.prql` file to a `.sql` file:
+
+`prqlc compile {{path/to/source.prql}} {{path/to/target.sql}}`
+
+- Compile a query:
+
+`echo "{{from employees | filter has_dog | select salary}}" | prqlc compile`
+
+- Watch a directory and compile on file modification:
+
+`prqlc watch {{path/to/directory}}`