Added workflows for IntelliJ Idea command line

Author: Patrick van Zadel

specs/idea/compare_two_files_in_intellij_idea_workflow.yaml

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+---
+name: Compare two file in IntelliJ Idea
+command: "idea diff {{file1}} {{file2}}"
+tags: ["idea"]
+description: Compare two files using IntelliJ Idea
+arguments:
+  - name: file1
+    description: The first file that you want to compare.
+    default_value: ~
+  - name: file2
+    description: The second file that you want to compare.
+    default_value: ~
+source_url: "https://www.jetbrains.com/help/idea/command-line-differences-viewer.html"
+author: Patrick van Zadel
+author_url: "https://github.com/Shuyinsama"
+shells: []

specs/idea/open_a_file_on_a_specific_line_in_intellij_idea_workflow.yaml

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+---
+name: Open a file on a specific line in IntelliJ Idea
+command: "idea --line {{line_number}} {{file}}"
+tags: ["idea"]
+description: Use the command line to open a file on a specific line in IntelliJ Idea.
+arguments:
+  - name: line_number
+    description: The line number you want the file to open two
+    default_value: 1
+  - name: file
+    description: The file that you want to open.
+    default_value: ~
+author: Patrick van Zadel
+author_url: "https://github.com/Shuyinsama"
+shells: []

specs/idea/open_a_file_or_directory_in_intellij_idea_workflow.yaml

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+---
+name: Open a file or directory in a IntelliJ Idea editor
+command: "idea {{file_or_directory}}"
+tags: ["idea"]
+description: Use the command line to open a file in IntelliJ Idea.
+arguments:
+  - name: file_or_directory
+    description: The file or directory that you want to open.
+    default_value: ~
+author: Patrick van Zadel
+author_url: "https://github.com/Shuyinsama"
+shells: []