docs: add organizations, provisioners, and premium license docs (#14778)

- [x] Mention Orgs is beta and add a link to get feedback
- [x] Add docs on new provisioner authentication architecture and
deprecate the old one
- [x] Add/update docs for IdP sync
  - [x] Organization Sync
  - [x] Group Sync
  - [x] Role Sync
- [x] Modify `coder.com` codebase to add `Premium` and `Beta` pill, and
allow multiple pills: https://github.com/coder/coder.com/pull/638
- [x] Replace all mentions of "Enterprise" with "Premium" in docs
  - [x] edit: change it to "Licensing"
- [x] Remove the enterprise page and change all links to
coder.com/pricing
- [x] Merge #14786
- [x] Add redirects for coder.com to redirect the `using-organizations`
guide to the new orgs one and /enterprise to /premium
https://github.com/coder/coder.com/pull/645
- [x] Custom roles
- [x] https://github.com/coder/coder/pull/14786
- [x] Remove all mentions of orgs experiment
- [x] Update in-product copy & links to link to the new docs pages

Anything I am missing?

---

[Preview
this](https://coder.com/docs/@orgs-licenses/admin/organizations)

---------

Co-authored-by: Edward Angert <EdwardAngert@users.noreply.github.com>
Co-authored-by: EdwardAngert <17991901+EdwardAngert@users.noreply.github.com>
Co-authored-by: Jaayden Halko <jaayden.halko@gmail.com>

scripts/apidocgen/postprocess/main.go

@@ -169,12 +169,12 @@ func writeDocs(sections [][]byte) error {
 
 	// Update manifest.json
 	type route struct {
-		Title       string  `json:"title,omitempty"`
-		Description string  `json:"description,omitempty"`
-		Path        string  `json:"path,omitempty"`
-		IconPath    string  `json:"icon_path,omitempty"`
-		State       string  `json:"state,omitempty"`
-		Children    []route `json:"children,omitempty"`
+		Title       string   `json:"title,omitempty"`
+		Description string   `json:"description,omitempty"`
+		Path        string   `json:"path,omitempty"`
+		IconPath    string   `json:"icon_path,omitempty"`
+		State       []string `json:"state,omitempty"`
+		Children    []route  `json:"children,omitempty"`
 	}
 
 	type manifest struct {

scripts/clidocgen/main.go

@@ -14,12 +14,12 @@ import (
 
 // route is an individual page object in the docs manifest.json.
 type route struct {
-	Title       string  `json:"title,omitempty"`
-	Description string  `json:"description,omitempty"`
-	Path        string  `json:"path,omitempty"`
-	IconPath    string  `json:"icon_path,omitempty"`
-	State       string  `json:"state,omitempty"`
-	Children    []route `json:"children,omitempty"`
+	Title       string   `json:"title,omitempty"`
+	Description string   `json:"description,omitempty"`
+	Path        string   `json:"path,omitempty"`
+	IconPath    string   `json:"icon_path,omitempty"`
+	State       []string `json:"state,omitempty"`
+	Children    []route  `json:"children,omitempty"`
 }
 
 // manifest describes the entire documentation index.