added dynamic-require example

Author: Cerem Cem ASLAN

example/dynamic-require/README.md

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+# Debugging 
+
+```console
+./debug-ls hello.ls
+```

example/dynamic-require/debug-ls

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+#!/bin/bash
+export NODE_PATH="$NODE_PATH:./my_node_modules"
+source ../../debug-ls

example/dynamic-require/hello.ls

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+require! 'my-lib': {sleep}
+require! 'fs'
+
+console.log "hello!"
+i = 0
+<~ :lo(op) ~>
+    console.log "looping... #{i++}"
+    console.log fs.readdirSync('.')
+    <~ sleep 1000ms
+    return op! if i > 20
+    debugger
+    lo(op)
+console.log "Ended."

example/dynamic-require/my_node_modules/hey.ls

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+#!/bin/bash
+
+export NODE_PATH="$NODE_PATH:./my_node_modules"
+lsc "$@"