idea: add page (#10763)

Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

pages/common/idea.md

@@ -0,0 +1,24 @@
+# idea
+
+> JetBrains Java and Kotlin IDE.
+> More information: <https://www.jetbrains.com/help/idea/working-with-the-ide-features-from-command-line.html>.
+
+- Open the current directory in IntelliJ IDEA:
+
+`idea {{path/to/directory}}`
+
+- Open a specific file or directory in IntelliJ IDEA:
+
+`idea {{path/to/file_or_directory}}`
+
+- Open the diff viewer to compare up to 3 files:
+
+`idea diff {{path/to/file1}} {{path/to/file2}}`
+
+- Open the merge dialog to perform a two-way file merge:
+
+`idea merge {{path/to/file1}} {{path/to/file2}} {{path/to/output}}`
+
+- Run code inspections on a project:
+
+`idea inspect {{path/to/project_directory}} {{path/to/inspection_profile}} {{path/to/output}}`