Add wasm support (#2199)

* Working towards a PoC for wasm

* Move bson and sqlite to plugins

* proof of concept now working

* tests are green

* Add CI test for --no-default-features

* Fix some tests

* Fix clippy and windows build

* More fixes

* Fix the windows build

* Fix the windows test

crates/nu_plugin_from_sqlite/src/nu/mod.rs

@@ -0,0 +1,46 @@
+#[cfg(test)]
+mod tests;
+
+use crate::FromSqlite;
+use nu_errors::ShellError;
+use nu_plugin::Plugin;
+use nu_protocol::{CallInfo, Primitive, ReturnValue, Signature, UntaggedValue, Value};
+use nu_source::Tag;
+
+impl Plugin for FromSqlite {
+    fn config(&mut self) -> Result<Signature, ShellError> {
+        Ok(Signature::build("from sqlite")
+            .desc("Convert from sqlite binary into table")
+            .filter())
+    }
+
+    fn begin_filter(&mut self, call_info: CallInfo) -> Result<Vec<ReturnValue>, ShellError> {
+        self.name_tag = call_info.name_tag;
+        Ok(vec![])
+    }
+
+    fn filter(&mut self, input: Value) -> Result<Vec<ReturnValue>, ShellError> {
+        match input {
+            Value {
+                value: UntaggedValue::Primitive(Primitive::Binary(b)),
+                ..
+            } => {
+                self.state.extend_from_slice(&b);
+            }
+            Value { tag, .. } => {
+                return Err(ShellError::labeled_error_with_secondary(
+                    "Expected binary from pipeline",
+                    "requires binary input",
+                    self.name_tag.clone(),
+                    "value originates from here",
+                    tag,
+                ));
+            }
+        }
+        Ok(vec![])
+    }
+
+    fn end_filter(&mut self) -> Result<Vec<ReturnValue>, ShellError> {
+        crate::from_sqlite::from_sqlite(self.state.clone(), Tag::unknown())
+    }
+}

crates/nu_plugin_from_sqlite/src/nu/tests.rs

@@ -0,0 +1 @@
+mod integration {}