- the hostname for the connection is `coder.WorkspaceName` if there is at most
  an agent.
- whereas if there are multiple agents, the hostname becomes `coder.WorkspaceName.AgentName`
- the OS and Arch are also retrieved from the agent.
- removed specific Linux distribution icons
- refactored the utilities around OS&Arch resolving
- resolves #2

…aces

Impl support for multi agent workspaces

-  add REST models for Workspace agents
-  add REST calls to retrieve the workspace resources
-  use custom exception & add docs
-  refactor: return the agents instead the full list of resources
-  add new icons for win/mac

-  add new view model for workspace
    - UI needs to present a combination of properties
      from two data models (Workspace and WorkspaceAgent)

-  implement support for workspaces with multiple agents
    - the hostname for the connection is `coder.WorkspaceName` if there is at most
      an agent.
    - whereas if there are multiple agents, the hostname becomes `coder.WorkspaceName.AgentName`
    - the OS and Arch are also retrieved from the agent.
    - removed specific Linux distribution icons
    - refactored the utilities around OS&Arch resolving
    - resolves #2

- use agent's OS and Arch to determine the supported Jetbrains products
    - the mechanism to determine the supported jetbrains products based on
      OS/Arch uses the os/arch properties from the agent data models.
    - if that is missing we fall back on the old way which opens an SSH connection
      and runs a  few unix commands to determine the properties