Workspace creation/edit view recasting and extending with new item

[ashumilova]

This epic will improve “workspace edit / creation” view with making them identical and extending with following items: project creation section, managing agents section, managing exposed ports section.

• Add "+" button next to "Recent workspaces" Add "+" button next to "Recent workspaces" #1768
• Make workspace creation and edit screens identical Make workspace creation and edit screens identical #1769
• New layout for forms in UD New layout for forms in UD #1770
• Add Ports section in the workspace configuration Add Ports section in the workspace configuration #1771
• Add Environment variables in the workspace configuration Add Environment variables in the workspace configuration #1772
• Add section in workspace to handle the stack improvement Add section in workspace to handle the stack #1773
• Add section in workspace to handle the agents Add section in workspace to handle the agents #1774
• Allow changing RAM size after workspace created Allow for changes to workspace RAM to existing workspace #1918
• Workspace environment page enhancement Workspace environment page enhancement #2451