[Issue/3148] ./run.ps1 for building waspc on Windows (#3324)

* Add waspc/run.ps1 for building waspc projects on Windows

Add a stub file for waspc/tools/install_packages_to_data_dir.ps1

* Update waspc/run.ps1

* Update waspc/tools/install_packages_to_data_dir.ps1

---------

Co-authored-by: Martin Šošić <[email protected]>

Author: nodtem66

waspc/run.ps1

@@ -0,0 +1,38 @@
+# The script duplicates some part of logics from run shell script.
+# We plan to merge these two scripts into one platform-agnostic script in the future to avoid duplication.
+# Requires PowerShell 5.1 or higher.
+
+param(
+    [string]$Command = ""
+)
+
+$PROJECT_ROOT = Split-Path -Parent $MyInvocation.MyCommand.Path
+$REPOSITORY_ROOT = Split-Path -Parent $PROJECT_ROOT
+    
+# Building
+$WASP_PACKAGES_COMPILE = Join-Path $PROJECT_ROOT "tools\install_packages_to_data_dir.ps1"
+$BUILD_HS_CMD = "cabal build all"
+$BUILD_ALL_CMD = "$WASP_PACKAGES_COMPILE -and $BUILD_HS_CMD"
+$RUN_CMD="cabal --project-dir=${PROJECT_ROOT} run wasp-cli -- $Args"
+
+switch ($Command) {
+    "build" {
+        Invoke-Expression $BUILD_HS_CMD
+    }
+    "build:all" {
+        Invoke-Expression $BUILD_ALL_CMD
+    }
+    "wasp-cli" {
+        Invoke-Expression $RUN_CMD
+    }
+    Default {
+        Write-Host "USAGE"
+        Write-Host "  run <command>"
+        Write-Host ""
+        Write-Host "COMMANDS"
+        Write-Host "  build             Builds the Haskell project."
+        Write-Host "  build:all         Builds the Haskell project + all sub-projects (i.e. TS packages)."
+        Write-Host "  wasp-cli <args>   Runs the dev version of wasp executable while forwarding arguments."
+        Write-Host "                    Builds the project (hs) first if needed. Doesn't require you to be in the waspc project to run it."
+    }
+}