feat: add contribs/gnomd (gnolang#1256)

This PR adds a `contribs/gnomd` binary.
Please review PR gnolang#1001 for the `maketx run`. 

Additionally, this PR introduces the `contribs/` folder. It allows the
creation of `contribs/gno*` Go packages, Python/Rust/Shell/… scripts.
This approach keeps the main `gno`, `gnokey`, and `gnoland` simple while
adhering to the Unix philosophy and incorporating several specific gno
commands.

![CleanShot 2023-10-19 at 09 17
40@2x](https://github.com/gnolang/gno/assets/94029/9b92bf18-f923-4f70-aea7-a88f185f2342)

---------

Signed-off-by: moul <[email protected]>
Co-authored-by: Morgan <[email protected]>

.github/workflows/contribs.yml

@@ -0,0 +1,35 @@
+name: contribs
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    paths:
+      - "contribs/**"
+      - ".github/workflows/contribs.yml"
+      - "gnovm/**.go"
+      - "gno.land/**.go"
+      - "tm2/**.go"
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  install:
+    strategy:
+      fail-fast: false
+      matrix:
+        goversion: # two latest versions
+          - "1.21.x"
+        program:
+          - "gnomd"
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v4
+        with:
+          go-version: ${{ matrix.goversion }}
+      - run: make install ${{ matrix.program }}
+        working-directory: contribs

.github/workflows/misc.yml

@@ -71,8 +71,9 @@ jobs:
 
       - name: Check go.mods
         run: |
-          sums="$(sha256sum go.mod misc/devdeps/go.mod)"
-          for path in . ./misc/devdeps; do
+          gomods=$(find . -type f -name go.mod)
+          sums="$(sha256sum ${gomods})"
+          for path in $(dirname $(gomods)); do
             env -C $path go mod tidy -v || exit 1
           done
           echo "$sums" | sha256sum -c

contribs/Makefile

@@ -0,0 +1,30 @@
+.PHONY: help
+help:
+	@echo "Available make commands:"
+	@cat Makefile | grep '^[a-z][^:]*:' | cut -d: -f1 | sort | sed 's/^/  /'
+
+.PHONY: install
+install: install.gnomd
+
+install.gnomd:; cd gnomd && go install .
+
+.PHONY: clean
+clean:
+	rm -rf build
+
+########################################
+# Dev tools
+rundep=go run -modfile ../misc/devdeps/go.mod
+
+.PHONY: fmt
+GOFMT_FLAGS ?= -w
+fmt:
+	$(rundep) mvdan.cc/gofumpt $(GOFMT_FLAGS) .
+
+########################################
+# Test suite
+GOTEST_FLAGS ?= -v -p 1 -timeout=30m
+
+.PHONY: test
+test:
+	@echo "nothing to do."

contribs/README.md

@@ -0,0 +1,17 @@
+# Gno Contribs
+
+This directory houses additional commands and tools designed to enhance your Gno experience.
+These tools can range from simple wrappers for `gno`, `gnoland`, and `gnokey` to complete applications.
+Some may be Go binaries with their own `go.mod` files, allowing the use of specialized libraries,
+while others may be shell scripts or programs written in different languages.
+
+## Contributing Guidelines
+
+If you'd like to contribute a tool to Gno Contribs, please follow these guidelines:
+
+1. **Naming**: Choose a clear and concise name for your tool, starting with one of the prefixes: `gno`, `gnoland`, or `gnokey`,
+   followed by a short descriptive word or abbreviation.
+   This naming convention helps users identify the purpose of the tool easily.
+
+2. **User-Friendly**: Ensure that your tool is user-friendly and follows a similar style to other Gno tools,
+   providing a consistent experience for users.

contribs/gnomd/go.mod

@@ -0,0 +1,25 @@
+module github.com/gnolang/gno/contribs/gnomd
+
+go 1.20
+
+require github.com/MichaelMure/go-term-markdown v0.1.4
+
+require (
+	github.com/MichaelMure/go-term-text v0.3.1 // indirect
+	github.com/alecthomas/chroma v0.7.1 // indirect
+	github.com/danwakefield/fnmatch v0.0.0-20160403171240-cbb64ac3d964 // indirect
+	github.com/disintegration/imaging v1.6.2 // indirect
+	github.com/dlclark/regexp2 v1.1.6 // indirect
+	github.com/eliukblau/pixterm/pkg/ansimage v0.0.0-20191210081756-9fb6cf8c2f75 // indirect
+	github.com/fatih/color v1.9.0 // indirect
+	github.com/gomarkdown/markdown v0.0.0-20191123064959-2c17d62f5098 // indirect
+	github.com/kyokomi/emoji/v2 v2.2.8 // indirect
+	github.com/lucasb-eyer/go-colorful v1.0.3 // indirect
+	github.com/mattn/go-colorable v0.1.4 // indirect
+	github.com/mattn/go-isatty v0.0.11 // indirect
+	github.com/mattn/go-runewidth v0.0.12 // indirect
+	github.com/rivo/uniseg v0.1.0 // indirect
+	golang.org/x/image v0.0.0-20191206065243-da761ea9ff43 // indirect
+	golang.org/x/net v0.0.0-20190813141303-74dc4d7220e7 // indirect
+	golang.org/x/sys v0.0.0-20191026070338-33540a1f6037 // indirect
+)

contribs/gnomd/main.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+
+	markdown "github.com/MichaelMure/go-term-markdown"
+)
+
+func main() {
+	// If no arguments are provided, read from stdin
+	if len(os.Args) <= 1 {
+		fileContent, err := ioutil.ReadAll(os.Stdin)
+		checkErr(err)
+		renderMarkdown("stdin.gno", fileContent)
+	}
+
+	// Iterate through command-line arguments (file paths)
+	for _, filePath := range os.Args[1:] {
+		fileContent, err := ioutil.ReadFile(filePath)
+		checkErr(err)
+		renderMarkdown(filePath, fileContent)
+	}
+}
+
+func renderMarkdown(filePath string, fileContent []byte) {
+	fmt.Printf("-- %s --\n", filePath)
+
+	result := markdown.Render(string(fileContent), 80, 6)
+	fmt.Println(string(result))
+}
+
+func checkErr(err error) {
+	if err != nil {
+		panic(err)
+	}
+}