Support Bazel build system (#1033)

Bug:https://github.com/ArthurSonzogni/FTXUI/issues/1032
Fixed:https://github.com/ArthurSonzogni/FTXUI/issues/1032

.bcr/README.md

@@ -0,0 +1,9 @@
+# Bazel Central Registry
+
+When the ruleset is released, we want it to be published to the
+Bazel Central Registry automatically:
+<https://registry.bazel.build>
+
+This folder contains configuration files to automate the publish step.
+See <https://github.com/bazel-contrib/publish-to-bcr/blob/main/templates/README.md>
+for authoritative documentation about these files.

.bcr/metadata.template.json

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+{
+  "homepage": "https://github.com/ArthurSonzogni/FTXUI",
+  "maintainers": [
+    {
+      "name": "Arthur Sonzogni",
+      "email": "sonzogniarthur@gmail.com",
+      "github": "ArthurSonzogni",
+      "github_user_id": 4759106
+    }
+  ],
+  "repository": [
+    "github:ArthurSonzogni/FTXUI"
+  ],
+  "versions": [],
+  "yanked_versions": {}
+}

.bcr/presubmit.yml

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+# Copyright 2025 Arthur Sonzogni. All rights reserved.
+# Use of this source code is governed by the MIT license that can be found in
+# the LICENSE file.
+matrix:
+  platform:
+  - centos7
+  - debian10
+  - ubuntu2004
+  - macos
+  - windows
+  bazel: [6.x, 7.x, 8.x]
+tasks:
+  verify_targets:
+    name: Build and test.
+    platform: ${{ platform }}
+    bazel: ${{ bazel }}
+    build_targets:
+    - '@ftxui//:ftxui'
+    - '@ftxui//:screen'
+    - '@ftxui//:dom'
+    - '@ftxui//:component'
+    test_targets:
+    - '@ftxui//:tests'
+

.bcr/source.template.json

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+{
+  "integrity": "",
+  "strip_prefix": "",
+  "url": "https://github.com/ArthurSonzogni/FTXUI/releases/download/{TAG}/source.tar.gz"
+}