docs: Add http/openapi documentation & ci workflow (#2678)

## Relevant issue(s)
Related #510 
Resolve #2677

## Description
- Detect OpenAPI / HTTP documentation is always up to date.
- Generate open-api docs in the appropriate dir.

## How has this been tested?
- using `act` tool
- manually introducing a change and seeing the action fail:
https://github.com/sourcenetwork/defradb/actions/runs/9359749777/job/25763961265?pr=2678

Specify the platform(s) on which this was tested:
- WSL2 instance

.github/workflows/check-cli-documentation.yml

@@ -35,15 +35,6 @@ jobs:
       - name: Checkout code into the directory
         uses: actions/checkout@v3
 
-      # This check is there as a safety to ensure we start clean (without any changes).
-      # If there are ever changes here, the rest of the job will output false result.
-      - name: Check no changes exist initially
-        uses: tj-actions/verify-changed-files@v20
-        with:
-          fail-if-changed: true
-          files: |
-             docs/website/references/cli
-
       - name: Setup Go environment explicitly
         uses: actions/setup-go@v3
         with:

.github/workflows/check-http-documentation.yml

@@ -0,0 +1,52 @@
+# Copyright 2024 Democratized Data Foundation
+#
+# Use of this software is governed by the Business Source License
+# included in the file licenses/BSL.txt.
+#
+# As of the Change Date specified in that file, in accordance with
+# the Business Source License, use of this software will be governed
+# by the Apache License, Version 2.0, included in the file
+# licenses/APL.txt.
+
+# This workflow checks that all HTTP documentation is up to date.
+# If the documentation is not up to date then this action will fail.
+name: Check HTTP Documentation Workflow
+
+on:
+  pull_request:
+    branches:
+      - master
+      - develop
+
+  push:
+    tags:
+      - 'v[0-9]+.[0-9]+.[0-9]+'
+    branches:
+      - master
+      - develop
+
+jobs:
+  check-http-documentation:
+    name: Check http documentation job
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code into the directory
+        uses: actions/checkout@v3
+
+      - name: Setup Go environment explicitly
+        uses: actions/setup-go@v3
+        with:
+          go-version: "1.21"
+          check-latest: true
+
+      - name: Try generating http documentation
+        run: make docs:http
+
+      - name: Check no new changes exist
+        uses: tj-actions/verify-changed-files@v20
+        with:
+          fail-if-changed: true
+          files: |
+             docs/website/references/http

Makefile

@@ -356,12 +356,17 @@ chglog:
 docs:
 	@$(MAKE) docs\:cli
 	@$(MAKE) docs\:manpages
+	@$(MAKE) docs\:http
 
 .PHONY: docs\:cli
 docs\:cli:
 	rm -f docs/website/references/cli/*.md
 	go run cmd/genclidocs/main.go -o docs/website/references/cli
 
+.PHONY: docs\:http
+docs\:http:
+	go run cmd/genopenapi/main.go | python -m json.tool > docs/website/references/http/openapi.json
+
 .PHONY: docs\:manpages
 docs\:manpages:
 	go run cmd/genmanpages/main.go -o build/man/