feat(commands): more commands (#30)

- I wrote a scripts to copy and generate all commands missing in iris
from fig repo: https://github.com/withfig/autocomplete
- Add a new script to generate commands docs about which commands
currently are inside commands folder
377d4aac663590e504fe39a92eb4dac4cbd333b2
- Add more icons e64d4e70a1db61e62053460a882e093bd6373ab1

commands/text/iconv.go

@@ -0,0 +1,23 @@
+package text
+
+import (
+	"github.com/versenilvis/iris/commands/core"
+)
+
+func init() {
+	core.Register(&core.Spec{
+		Name:        "iconv",
+		Description: "Character set conversion",
+		Options: []core.Option{
+			{Name: "--help", Description: "Show help for iconv"},
+			{Name: "--version", Description: "Output version information and exit"},
+			{Name: "-f", Description: "Specifies the encoding of the input"},
+			{Name: "-t", Description: "Specifies the encoding of the output"},
+			{Name: "-c", Description: "Discard unconvertible characters"},
+			{Name: "-l", Description: "List the supported encodings"},
+			{Name: "--unicode-subst", Description: "Substitution for unconvertible Unicode characters"},
+			{Name: "--byte-subst", Description: "Substitution for unconvertible bytes"},
+			{Name: "--widechar-subst", Description: "Substitution for unconvertible wide characters"},
+		},
+	})
+}