llvmbot monitor: Add MIT License file

This will allow us to share this code without
a bunch of one off agreements.

I've chosen MIT because:
* We don't intend to sell it.
* We don't require changes to be contributed back.
  (and don't have a great way to accept them anyway)
* We don't want to make any claims about its functionality
  being perfect (no warranty).
* Companies see MIT as a friendly license and that's
  going to be most of the small audience for this.
* This code does not have any patentable material
  that would point us towards some LLVM style Apache license.

Change-Id: I0c6afa0417af9cb281e50cb353ac48d9f3a1900e
diff --git a/monitor/LICENSE b/monitor/LICENSE
new file mode 100644
index 0000000..8c0c644
--- /dev/null
+++ b/monitor/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2022 Linaro
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.