feat(flexo): adding arch linux flexo proxy (#32967)

**Description**
Adding arch linux package manager proxy
[flexo](https://github.com/nroi/flexo)
⚒️ Fixes  

**⚙️ Type of change**

- [x] ⚙️ Feature/App addition
- [ ] 🪛 Bugfix
- [ ] ⚠️ Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] 🔃 Refactor of current code
- [ ] 📜 Documentation Changes

**🧪 How Has This Been Tested?**
I run this chart in my cluster

**📃 Notes:**


**✔️ Checklist:**

- [x] ⚖️ My code follows the style guidelines of this project
- [x] 👀 I have performed a self-review of my own code
- [ ] #️⃣ I have commented my code, particularly in hard-to-understand
areas
- [ ] 📄 I have made changes to the documentation
- [ ] 🧪 I have added tests to this description that prove my fix is
effective or that my feature works
- [x] ⬆️ I increased versions for any altered app according to semantic
versioning
- [x] I made sure the title starts with `feat(chart-name):`,
`fix(chart-name):`, `chore(chart-name):`, `docs(chart-name):` or
`fix(docs):`

**➕ App addition**

If this PR is an app addition please make sure you have done the
following.

- [x] 🖼️ I have added an icon in the Chart's root directory called
`icon.png`

---------

Co-authored-by: alfi0812 <admin@alfi0812.de>

charts/incubator/flexo/.helmignore

@@ -0,0 +1,32 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/
+# OWNERS file for Kubernetes
+OWNERS
+# helm-docs templates
+*.gotmpl
+# docs folder
+/docs
+# icon
+icon.png
+icon.webp
+icon-small.webp

charts/incubator/flexo/CHANGELOG.md

@@ -0,0 +1,4 @@
+---
+title: Changelog
+pagefind: false
+---

charts/incubator/flexo/Chart.yaml

@@ -0,0 +1,36 @@
+annotations:
+  max_scale_version: 24.04.1
+  min_scale_version: 24.04.0
+  truecharts.org/category: tools
+  truecharts.org/max_helm_version: "3.15"
+  truecharts.org/min_helm_version: "3.11"
+  truecharts.org/train: incubator
+apiVersion: v2
+appVersion: 1.6.9
+dependencies:
+  - name: common
+    version: 25.4.10
+    repository: oci://tccr.io/truecharts
+    condition: ""
+    alias: ""
+    tags: []
+    import-values: []
+deprecated: false
+description: Arch linux pacman cache proxy server
+home: https://truecharts.org/charts/incubator/flexo
+icon: https://truecharts.org/img/hotlink-ok/chart-icons/flexo.webp
+keywords:
+  - flexo
+  - linux
+kubeVersion: '>=1.24.0-0'
+maintainers:
+  - name: TrueCharts
+    email: info@truecharts.org
+    url: https://truecharts.org
+name: flexo
+sources:
+  - https://github.com/nroi/flexo
+  - https://github.com/truecharts/charts/tree/master/charts/incubator/flexo
+  - https://hub.docker.com/r/nroi/flexo
+type: application
+version: 0.0.1

charts/incubator/flexo/README.md

@@ -0,0 +1,3 @@
+---
+title: README
+---

charts/incubator/flexo/templates/NOTES.txt

@@ -0,0 +1 @@
+{{- include "tc.v1.common.lib.chart.notes" $ -}}

charts/incubator/flexo/templates/common.yaml

@@ -0,0 +1,2 @@
+{{/* Render the templates */}}
+{{ include "tc.v1.common.loader.all" . }}

charts/incubator/flexo/values.yaml

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+image:
+  pullPolicy: IfNotPresent
+  repository: docker.io/nroi/flexo
+  tag: 1.6.9@sha256:850061e57c6d0acdee618be70ba4c58149137980852aaaf917bcde885e5ad65a
+
+service:
+  main:
+    ports:
+      main:
+        port: 7878
+        protocol: http
+persistence:
+  data:
+    enabled: true
+    type: "emptyDir"
+    size: 10Gi
+    mountPath: "/var/cache/flexo"
+workload:
+  main:
+    podSpec:
+      containers:
+        main:
+          probes:
+            liveness:
+              path: "/metrics"
+            readiness:
+              path: "/metrics"
+            startup:
+              path: "/metrics"
+          env:
+            FLEXO_LISTEN_IP_ADDRESS: "0.0.0.0"
+            FLEXO_PORT: "{{ .Values.service.main.ports.main.port }}"