docs: Added evidence client docs

x/evidence/spec/07_client.md

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+# Client
+
+## CLI
+
+A user can query and interact with the `evidence` module using CLI.
+
+### Query
+
+The `query` commands allows users to interact with the `evidence` state.
+
+```bash
+simd query evidence --help
+```
+### evidence
+
+The `evidence` command allows users to list all evidences.
+
+Usage:
+
+```bash
+simd query evidence [flags]
+```
+
+Example:
+
+```bash
+simd query evidence
+```
+Example Output:
+
+```bash
+evidence: []
+pagination:
+  next_key: null
+  total: "0"
+```
+
+## REST
+
+A user can query the `evidence` module using REST endpoints.
+
+### Evidence
+
+Get evidence by hash
+
+```bash
+/cosmos/evidence/v1beta1/evidence/{evidence_hash}
+```
+
+Example:
+
+```bash
+curl -X GET "http://localhost:1317/cosmos/evidence/v1beta1/evidence/DF0C23E8634E480F84B9D5674A7CDC9816466DEC28A3358F73260F68D28D7660"
+```
+
+### All evidences
+
+Get all evidences
+
+```bash
+/cosmos/evidence/v1beta1/evidence
+```
+
+Example:
+
+```bash
+curl -X GET "http://localhost:1317/cosmos/evidence/v1beta1/evidence"
+```
+
+## gRPC
+
+A user can query the `evidence` module using gRPC endpoints.
+
+### Evidence
+
+Get evidence by hash
+
+```bash
+cosmos.evidence.v1beta1.Query/Evidence
+```
+
+Example:
+
+```bash
+grpcurl -plaintext -d '{"evidence_hash":"DF0C23E8634E480F84B9D5674A7CDC9816466DEC28A3358F73260F68D28D7660"}' localhost:9090 cosmos.evidence.v1beta1.Query/Evidence
+```
+
+### All evidences
+
+Get all evidences
+
+```bash
+cosmos.evidence.v1beta1.Query/AllEvidence
+```
+
+Example:
+
+```bash
+grpcurl -plaintext localhost:9090 cosmos.evidence.v1beta1.Query/AllEvidence
+```