add open image from clipboard & clipboard OCR (raycast#813)

* add open image from clipboard

* add clipboard-ocr

* resolve comments

commands/conversions/clipboard-ocr.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# Dependency: `brew install pngpaste tesseract`
+# pngpaste required to grab image from clipboard
+# tesseract required to OCR
+
+# Required parameters:
+# @raycast.schemaVersion 1
+# @raycast.title OCR Image
+# @raycast.mode fullOutput
+
+# Optional parameters:
+# @raycast.icon 📋
+# @raycast.packageName Clipboard
+
+# Documentation:
+# @raycast.description OCR Image from Clipboard
+# @raycast.author xxchan
+# @raycast.authorURL https://github.com/xxchan
+
+# credit to @laixintao https://www.kawabangga.com/posts/4876
+
+pngpaste - | tesseract stdin stdout

commands/system/open-image-from-clipboard.sh

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+#!/bin/bash
+
+# Dependency: `brew install pngpaste coreutils`
+# pngpaste required to grab image from clipboard
+# coreutils required to create temp file with suffix
+
+# Required parameters:
+# @raycast.schemaVersion 1
+# @raycast.title Open Image
+# @raycast.mode compact
+
+# Optional parameters:
+# @raycast.icon 📋
+# @raycast.packageName Clipboard
+
+# Documentation:
+# @raycast.description Open Image from Clipboard in Preview for OCR or other purposes.
+# @raycast.author xxchan
+# @raycast.authorURL https://github.com/xxchan
+
+tempfile=$(gmktemp --suffix=.png) && pngpaste $tempfile && open $tempfile