devenv: Add make target to "install" vscode extension

Taking advantage of workspace local extensions, this adds a make target that will symlink the
`code/` directory to `.vscode/extensions/esbonio` allowing it to be installed.
It would be nice if there was a cli `code` command that would do the final step though....

.gitignore

@@ -4,6 +4,7 @@
 .env
 .ipynb_checkpoints
 .tox
+.vscode/extensions/esbonio
 .vscode-test
 
 *.pyc

code/Makefile

@@ -2,7 +2,7 @@ include ../.devcontainer/tools.mk
 
 ESBONIO ?= --pre esbonio
 
-.PHONY: dist dev-deps release-deps release
+.PHONY: dist dev-deps release-deps release install
 
 watch: dev-deps $(NPM)
 	-test -d dist && rm -r dist
@@ -12,6 +12,10 @@ compile: dev-deps $(NPM)
 	-test -d dist && rm -r dist
 	$(NPM) run compile
 
+install: compile
+	-test -d ../.vscode/extensions || mkdir -p ../.vscode/extensions
+	test -L ../.vscode/extensions/esbonio || ln -s $(PWD) ../.vscode/extensions/esbonio
+
 dist: release-deps $(NPM)
 	-test -d dist && rm -r dist
 	$(NPM) run package

code/package.json

@@ -24,7 +24,7 @@
         "package": "vsce package --pre-release --baseImagesUrl https://github.com/swyddfa/esbonio/raw/release/code/",
         "vscode:prepublish": "npm run compile"
     },
-    "main": "dist/node/extension",
+    "main": "dist/node/extension.js",
     "extensionDependencies": [
         "ms-python.python",
         "chrisjsewell.myst-tml-syntax"