Add Yarn and Gemini CLI dependencies; enhance pandas Series indexing tests

- Created package.json to include @google/gemini-cli dependency.
- Added Yarn shell scripts (yarn, yarn.cmd, yarn.ps1, yarnpkg, yarnpkg.cmd, yarnpkg.ps1) for package management.
- Introduced comprehensive tests for pandas Series indexing, covering various scenarios including basic indexing, error handling, and edge cases.
- Ensured compatibility with datetime and timedelta types in Series.
- Validated behavior with duplicate indices and boolean indexing.

Author: sanchit122006

npm/gemini

@@ -0,0 +1,16 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*)
+        if command -v cygpath > /dev/null 2>&1; then
+            basedir=`cygpath -w "$basedir"`
+        fi
+    ;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  exec "$basedir/node"  "$basedir/node_modules/@google/gemini-cli/dist/index.js" "$@"
+else 
+  exec node  "$basedir/node_modules/@google/gemini-cli/dist/index.js" "$@"
+fi

npm/gemini.cmd

@@ -0,0 +1,17 @@
+@ECHO off
+GOTO start
+:find_dp0
+SET dp0=%~dp0
+EXIT /b
+:start
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+endLocal & goto #_undefined_# 2>NUL || title %COMSPEC% & "%_prog%"  "%dp0%\node_modules\@google\gemini-cli\dist\index.js" %*

npm/gemini.ps1

@@ -0,0 +1,28 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "$basedir/node$exe"  "$basedir/node_modules/@google/gemini-cli/dist/index.js" $args
+  } else {
+    & "$basedir/node$exe"  "$basedir/node_modules/@google/gemini-cli/dist/index.js" $args
+  }
+  $ret=$LASTEXITCODE
+} else {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "node$exe"  "$basedir/node_modules/@google/gemini-cli/dist/index.js" $args
+  } else {
+    & "node$exe"  "$basedir/node_modules/@google/gemini-cli/dist/index.js" $args
+  }
+  $ret=$LASTEXITCODE
+}
+exit $ret