Add multi-remote support for GitLab (#1)

Co-authored-by: Ryan D McGuire <ryand_mcguire@sweetwater.com>
Reviewed-on: 50W/git-project-manager#1

README.md

@@ -17,8 +17,8 @@ gpm know that and it'll remember.
 
 The basic workflow looks like this:
 
+1. **Config** -- generate a config file
 1. **Cache** -- load your cache to make things super quick
-	1. project cache has a TTL, or you can load it manually
 	1. you only need to update it if there are new projects the cache is unaware of
 1. **Add** -- find your project, give it any extra aliases you want
 	1. run `gpm project add` (or `padd` if using the provided shell defaults)
@@ -40,12 +40,15 @@ The basic workflow looks like this:
 1. Copy `contrib/gpm_func_omz.zsh` into your `~/.oh-my-zsh/custom/` path, or just source from your bashrc/zshrc
 1. Generate config file: `gpm config gen --write`
     1. You can run this any time to update settings
+    1. It will only add one GitLab, so update the file for multiple
 1. Run `gpm cache load` (if aliases is in-place, otherwise `gitlab-project-manager cache load`)
 
 ### Config Sample
 ```yaml
-gitlabHost: https://gitlab.sweetwater.com
-gitlabToken: <your token here>
+gitlabs:
+  - Host: https://gitlab.sweetwater.com
+    Token: <your token here>
+    Name: Sweetwater GitLab
 logLevel: info
 cache:
   ttl: 168h
@@ -54,18 +57,22 @@ cache:
 ```
 ## TODO
 
-- [ ] Fix initial setup requiring project path, and set https:// as default for gitlab host
+- [x] Use multi-gitlab by default in config init
+    - [x] Update docs for multi-gitlab
+    - [x] Remove all references to old keys
+    - [x] Add auto-completion helper for --gitlab flag
+- [x] Fix initial setup requiring project path, and set https:// as default for gitlab host
 - [ ] Fix NPE when cache is reset or project for whatever reason leaves an orphaned alias
-- [ ] Add config setters and getters
+- [x] Add config setters and getters
 - [ ] Add TTL check to cache load, and add -f / --force flag to re-build regardless
 - [ ] For each project loaded, check if it is the same, and do nothing
-	- [ ] prevents clobbering cache on a partial update
-	- [ ] track already loaded projects to diff after load
+	- [x] prevents clobbering cache on a partial update
+	- [x] track already loaded projects to diff after load
 	- [ ] should prune missing after the load is complete
-- [ ] Add open command
-	- [ ] config should exist for editor (vim, code, etc..)
+- [x] Add open command
+	- [x] config should exist for editor (vim, code, etc..)
 - [ ] Update README for shell completion, aliases, usage
-- [ ] Add fzf to `plist` / `gpm projects list`
+- [x] Add fzf to `plist` / `gpm projects list`
 - [ ] Make a Makefile
 - [ ] Add git repo status to project go (up-to-date, pending commits, etc..)
 - [x] Update `gpm project show` with pterm box like `gpm project list`