Only run CI on relevant changes (#307)

This requires that each folder is somewhat selfcontained. This wasn't
the case for json schema as it's build related files were located in
the project root.

* Move the json schema into the `jsonschema/src` folder
* Move the code to generate messages.md and validate json schemas into
  jsonschema folder
* Only run "language" specific CI on changes to that language
* Only run code gen specific CI on changes to JSON schemas and codegen

This should save a tree or two.

Author: mpkorstanje

.github/workflows/test-codegen.yml

@@ -5,10 +5,22 @@ on:
     branches:
       - main
       - renovate/**
+    paths:
+      - jsonschema/**
+      - codegen/**
+      - Makefile
+      - .github/**
   pull_request:
     branches:
       - main
+    paths:
+      - jsonschema/**
+      - codegen/**
+      - Makefile
+      - .github/**
   workflow_call:
+    
+    
 
 jobs:
   test-codegen:
@@ -22,9 +34,11 @@ jobs:
         with:
           node-version: 18
           cache: "npm"
-
+          cache-dependency-path: jsonschema/package-lock.json
+          
       - name: validate the json schemas
         run: make validate
+        working-directory: jsonschema
 
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
@@ -33,8 +47,8 @@ jobs:
 
       - name: generate code for all languages
         run: |
-          make clean-all
-          make generate-all
+          make clean
+          make generate
 
       - name: check the repo is still clean after generation
         run: |

.github/workflows/test-cpp.yml

@@ -4,11 +4,18 @@ on:
   push:
     branches:
       - main
-      - cpp*
       - renovate/**
+    paths:
+      - cpp/**
+      - Makefile 
+      - .github/**
   pull_request:
     branches:
       - main
+    paths:
+      - cpp/**
+      - Makefile
+      - .github/**
   workflow_call:
 
 jobs:

.github/workflows/test-dotnet.yml

@@ -5,9 +5,17 @@ on:
     branches:
       - main
       - renovate/**
+    paths:
+      - dotnet/**
+      - Makefile
+      - .github/**
   pull_request:
     branches:
       - main
+    paths:
+      - dotnet/**
+      - Makefile
+      - .github/**
   workflow_call:
 
 jobs:

.github/workflows/test-elixir.yml

@@ -5,9 +5,17 @@ on:
     branches:
       - main
       - renovate/**
+    paths:
+      - elixir/**
+      - Makefile
+      - .github/**
   pull_request:
     branches:
       - main
+    paths:
+      - elixir/**
+      - Makefile
+      - .github/**
   workflow_call:
 
 jobs:

.github/workflows/test-go.yml

@@ -5,9 +5,17 @@ on:
     branches:
       - main
       - renovate/**
+    paths:
+      - go/**
+      - Makefile
+      - .github/**
   pull_request:
     branches:
       - main
+    paths:
+      - go/**
+      - Makefile
+      - .github/**
   workflow_call:
 
 jobs:

.github/workflows/test-java.yml

@@ -5,9 +5,17 @@ on:
     branches:
       - main
       - renovate/**
+    paths:
+      - java/**
+      - Makefile
+      - .github/**
   pull_request:
     branches:
       - main
+    paths:
+      - java/**
+      - Makefile
+      - .github/**
   workflow_call:
 
 jobs:

.github/workflows/test-javascript.yml

@@ -5,9 +5,17 @@ on:
     branches:
       - main
       - renovate/**
+    paths:
+      - javascript/**
+      - Makefile
+      - .github/**
   pull_request:
     branches:
       - main
+    paths:
+      - javascript/**
+      - Makefile
+      - .github/**
   workflow_call:
 
 jobs:

.github/workflows/test-perl.yml

@@ -5,9 +5,17 @@ on:
     branches:
       - main
       - renovate/**
+    paths:
+      - perl/**
+      - Makefile
+      - .github/**
   pull_request:
     branches:
       - main
+    paths:
+      - perl/**
+      - Makefile
+      - .github/**
   workflow_call:
 
 jobs:

.github/workflows/test-php.yml

@@ -5,9 +5,17 @@ on:
     branches:
       - main
       - renovate/**
+    paths:
+      - php/**
+      - Makefile
+      - .github/**
   pull_request:
     branches:
       - main
+    paths:
+      - php/**
+      - Makefile
+      - .github/**
   workflow_call:
 
 jobs:

.github/workflows/test-python.yml

@@ -6,10 +6,18 @@ on:
     branches:
       - main
       - renovate/**
+    paths:
+      - python/**
+      - Makefile
+      - .github/**
   pull_request:
     branches:
       - main
-  workflow_dispatch:
+    paths:
+      - python/**
+      - Makefile
+      - .github/**
+  workflow_call:
 
 jobs:
   build: