add executor sig

sigs/executor/README.md

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+# MindSpore Executor Special Interest Group (SIG)
+
+This is the working repo for the Executor Special Interest Group (SIG). This repo contains all the artifacts, materials, meeting notes and proposals regarding **graph optimizing** , **graph compling**, **hardware runtime**, **diagnostics**, and any other backend programs in MindSpore. Feedbacks and contributions are welcomed.
+1. **Graph Optimizing**: Similar to graph "complier", there are many Passes to fuse operators and optimize graphs.
+2. **Graph Compling**: Allocating memory and other resources, compling graphs to generate runnable models.
+3. **Hardware Runtime**: Interface for hardware, who supportes ascend910, gpu and cpu now.
+4. **Diagnostics**: Provide some tools such as profiling, exporting graph ir and exporting operator data.
+
+# SIG Leads
+
+* Lu Pengcheng (Huawei)
+
+# Logistics
+
+* SIG leads will drive the meeting.
+* Meeting annoucement will be posted on our gitee channel: https://gitee.com/mindspore/community/tree/master/sigs/executor
+* Feedbacks and topic requests are welcomed by all.
+
+# Discussion
+
+* Slack channel: https://app.slack.com/client/TUKCY4QDR/C0111A9Q24B?cdn_fallback=2
+* Documents and artifacts: https://gitee.com/mindspore/community/tree/master/sigs/executor
+
+# Meeting notes
+

sigs/executor/meetings/meeting-template.md

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+# Thursday April 2, 2020 at 21:30pm GMT+8
+
+## Agenda
+
+## Conference links
+
+## Attendees 
+* Tom (Huawei)
+
+## Notes
+* TODO
+
+## Action items
+* TODO