feat(nestjs) Adding NestJS plugin (#13104)

* Adding NestJS command aliases
* Removed installation instructions from the README file of NestJS plugin

plugins/nestjs/nestjs.plugin.zsh

@@ -0,0 +1,41 @@
+# Oh My Zsh plugin for NestJS CLI
+
+# Check if nest command exists
+if ! command -v nest &>/dev/null; then
+  return
+fi
+
+# Project creation
+alias nnew='nest new'
+
+# Basic development
+alias nb='nest build'
+alias ns='nest start'
+alias nsw='nest start --watch'
+alias nsd='nest start --dev' # Alias for start --watch
+alias nsdbg='nest start --debug --watch'
+
+# Code generation (short aliases)
+alias ng='nest generate'
+alias ngm='nest generate module'
+alias ngc='nest generate controller'
+alias ngs='nest generate service'
+alias ngg='nest generate guard'
+alias ngp='nest generate pipe'
+alias ngf='nest generate filter'
+alias ngr='nest generate resolver'
+alias ngcl='nest generate class'
+alias ngi='nest generate interface'
+alias ngit='nest generate interceptor'
+alias ngmi='nest generate middleware'
+alias ngd='nest generate decorator'
+alias ngres='nest generate resource'
+alias nglib='nest generate library'
+alias ngsub='nest generate sub-app'
+
+# Other commands
+alias na='nest add'
+alias ni='nest info'
+alias nu='nest update'
+
+# You can add more aliases or functions here as needed.