build: introduce a linting target name taxonomy

The linting targets used to mostly have ad-hoc names usually reflecting
the linting tool used (like shellcheck, yamllint, and checkmake).

This change systematizes the names of the linting targets to follow a
pattern of lint.foo where foo usually reflects *what* is linted rather
than *how*.

so, more idiomatically, the pattern can be described as "action.thing"
to indicacte that "action" is to be performed on a "thing".

This systematization is achieved by renaming a couple of targets:

- shellcheck -> lint.shell
- yamllint -> lint.yaml
- checkmake -> lint.make
0 helm.lint -> lint.helm
- pylint -> lint.python
fmt  -> lint.fmt

Additionally, a new target go.lint is introduced that runs
several go linting tools.

Finally, two fixing targets are renamed for consistency:

* fmt-fix -> fix.fmt
* markdownlint.fix -> fix/markdown

Signed-off-by: Michael Adam <obnox@samba.org>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

.github/workflows/helm-lint.yaml

@@ -31,5 +31,5 @@ jobs:
           fetch-depth: 0
 
 
-      - name: Run chart-testing (lint)
-        run: make helm.lint
+      - name: Lint the helm charts
+        run: make lint.helm

.github/workflows/linters.yaml

@@ -28,7 +28,7 @@ jobs:
           fetch-depth: 0
 
       - name: Lint YAML files
-        run: make yamllint
+        run: make lint.yaml
 
   pylint:
     runs-on: ubuntu-latest
@@ -49,8 +49,8 @@ jobs:
           pip install requests
           pip install pygit2
 
-      - name: Lint Python files
-        run: make pylint
+      - name: Lint Python scripts
+        run: make lint.python
 
       - name: Setup black for py
         uses: psf/black@c6755bb741b6481d6b3d3bb563c83fa060db96c9 # stable

.github/workflows/shellcheck.yaml

@@ -25,5 +25,5 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-      - name: Run ShellCheck
-        run: make shellcheck
+      - name: Lint shell scripts
+        run: make lint.shell