feat: Add first modules

This adds the first modules blocks from the initial proof of concept, with basic docs.
Currently missing is bundling and usage instructions

test.sh

@@ -0,0 +1,67 @@
+#!/usr/bin/env bash
+#
+# Basic demo of features
+#
+source src/main.sh
+
+#
+# UTILS
+#
+show_error "Something went wrong"
+show_success "There we go"
+
+#
+# LOGGING
+#
+export LOG_LEVEL="$LOG_DEBUG"
+log "$LOG_DEBUG" "Debug message"
+log "$LOG_INFO" "Info message"
+log "$LOG_WARN" "Warn message"
+log "$LOG_ERROR" "Error message"
+
+#
+# PROMPTS
+#
+
+options=("one" "two" "three" "four")
+
+validate_password() {
+    if [ ${#1} -lt 10 ];then
+        echo "Password needs to be at least 10 characters"
+        exit 1
+    fi
+}
+# Password prompt
+pass=$(with_validate 'password "Enter random password"' validate_password)
+
+# Checkbox
+checked=$(checkbox "Select one or more items" "${options[@]}")
+
+# text input with validation
+text=$(with_validate 'input "Please enter something and confirm with enter"' validate_present)
+
+# Select
+option=$(list "Select one item" "${options[@]}")
+
+# Confirm
+confirmed=$(confirm "Should it be?")
+
+# Open editor
+editor=$(editor "Please enter something in the editor")
+
+# Print results
+echo "
+---
+password:
+$pass
+input:
+$text
+select:
+$option
+checkbox:
+$checked
+confirm:
+$confirmed
+editor:
+$editor
+"