Add Grafana Alloy configuration files and update examples

- Introduced detailed configuration guidelines in alloy.instructions.md
- Added general instructions for project structure in general.instructions.md
- Created config.yaml for NAMU-PC with target hostnames
- Implemented example.alloy and openwrt.alloy for service discovery and scraping
- Added alloy_seed.json for initial configuration state
- Developed demo.alloy for comprehensive monitoring setup
- Established std.alloy for repository path formatting and host configuration loading
- Updated test.alloy to utilize new host configuration loading

OpenWRT/config.yaml

@@ -0,0 +1,5 @@
+
+NAMU-PC:
+  targets:
+    - hostname: r1.kv40.kkarolis.lt
+    - hostname: r2.kv40.kkarolis.lt

OpenWRT/example.alloy

@@ -0,0 +1,19 @@
+
+import.file "openwrt" {
+    filename = "./openwrt.alloy"
+}
+
+openwrt.openwrt {
+    forward_to = [prometheus.remote_write.metrics_service.receiver]
+}
+
+prometheus.remote_write "metrics_service" {
+	endpoint {
+		url = "https://prometheus-prod-24-prod-eu-west-2.grafana.net/api/prom/push"
+
+		basic_auth {
+			username = "1257735"
+			password = sys.env("GCLOUD_RW_API_KEY")
+		}
+	}
+}

OpenWRT/openwrt.alloy

@@ -0,0 +1,7 @@
+declare "openwrt" {
+	argument "forward_to" {
+		optinal = false
+		comment = "Where to forward the scraped metrics"
+	}
+
+}