feat: add base module

- Add base module with context, session, and configurator.
- Implement session management and configuration loading/saving.
- Introduce error handling and logging mechanisms.
- Include template files for Lua scripts.

lib/core/base/context_session.v

@@ -0,0 +1,89 @@
+module base
+
+import freeflowuniverse.crystallib.data.ourtime
+import freeflowuniverse.crystallib.data.paramsparser
+import json
+
+@[params]
+pub struct SessionConfig {
+pub mut:
+	name        string // unique name for session (id), there can be more than 1 session per context
+	start       string // can be e.g. +1h
+	description string
+	params      string
+}
+
+// get a session object based on the name /
+// params:
+// ```
+// name string
+// ```
+pub fn (mut context Context) session_new(args_ SessionConfig) !Session {
+	mut args := args_
+	if args.name == '' {
+		args.name = ourtime.now().key()
+	}
+
+	if args.start == '' {
+		t := ourtime.new(args.start)!
+		args.start = t.str()
+	}
+
+	mut r := context.redis()!
+
+	rkey := 'sessions:config:${args.name}'
+
+	config_json := json.encode(args)
+
+	r.set(rkey, config_json)!
+
+	rkey_latest := 'sessions:config:latest'
+	r.set(rkey_latest, args.name)!
+
+	return context.session_get(name: args.name)!
+}
+
+@[params]
+pub struct ContextSessionGetArgs {
+pub mut:
+	name string
+}
+
+pub fn (mut context Context) session_get(args_ ContextSessionGetArgs) !Session {
+	mut args := args_
+	mut r := context.redis()!
+
+	if args.name == '' {
+		rkey_latest := 'sessions:config:latest'
+		args.name = r.get(rkey_latest)!
+	}
+	rkey := 'sessions:config:${args.name}'
+	mut datajson := r.get(rkey)!
+	if datajson == '' {
+		if args.name == '' {
+			return context.session_new()!
+		} else {
+			return error("can't find session with name ${args.name}")
+		}
+	}
+	config := json.decode(SessionConfig, datajson)!
+	t := ourtime.new(config.start)!
+	mut s := Session{
+		name:    args.name
+		start:   t
+		context: &context
+		params:  paramsparser.new(config.params)!
+		config:  config
+	}
+	return s
+}
+
+pub fn (mut context Context) session_latest() !Session {
+	mut r := context.redis()!
+	rkey_latest := 'sessions:config:latest'
+	latestname := r.get(rkey_latest)!
+	if latestname == '' {
+		return context.session_new()!
+	}
+	return context.session_get(name: latestname)!
+}