Create the Project Manager project (#320)

* Created the Project Manager project with a barebone styled window and rough sketch of first screen

* Renamed to Project Manager, ect.

* Corrected string name for projectmanager and added comments on getting engine path

* Changed output name for Project Manager to lowercase o3de

* Added header guards

Code/Tools/ProjectManager/Resources/Add.svg

@@ -0,0 +1,4 @@
+<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+<rect width="24" height="24" fill="#444444"/>
+<path fill-rule="evenodd" clip-rule="evenodd" d="M13 3H11V11H3V13H11V21H13V13H21V11H13V3Z" fill="white"/>
+</svg>

Code/Tools/ProjectManager/Resources/Select_Folder.svg

@@ -0,0 +1,4 @@
+<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+<rect width="24" height="24" fill="#444444"/>
+<path fill-rule="evenodd" clip-rule="evenodd" d="M9.98407 4H2V6V7V19.8145H2.07539L6.02059 7.99123H19V6H11.328L9.98407 4ZM19 19.7473L22.0766 10H7.05436L3.68763 19.8329H18.973L18.9788 19.8145H19V19.7473Z" fill="white"/>
+</svg>

Code/Tools/ProjectManager/Resources/o3de_editor.ico

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c042fce57915fc749abc7b37de765fd697c3c4d7de045a3d44805aa0ce29901a
+size 107016