feat(curriculum): add bash scripting lectures (#61452)

Co-authored-by: Hillary Nyakundi <63947040+larymak@users.noreply.github.com>
Co-authored-by: Dario <105294544+Dario-DC@users.noreply.github.com>

client/i18n/locales/english/intro.json

@@ -4520,7 +4520,10 @@
           "Test what you've learned on relational databases with this quiz."
         ]
       },
-      "pexz": { "title": "311", "intro": [] },
+      "lecture-understanding-bash-scripting": {
+        "title": "Understanding Bash Scripting",
+        "intro": ["Learn about Bash Scripting in these lectures."]
+      },
       "workshop-bash-five-programs": {
         "title": "Build Five Programs",
         "intro": [

client/src/pages/learn/full-stack-developer/lecture-understanding-bash-scripting/index.md

@@ -0,0 +1,9 @@
+---
+title: Introduction to Understanding Bash Scripting
+block: lecture-understanding-bash-scripting
+superBlock: full-stack-developer
+---
+
+## Introduction to Understanding Bash Scripting
+
+Learn about Bash Scripting in these lectures.