🚚 Add doit wrapper scripts to run from the IDE (#4996)

Add some wrapper scripts for `doit`, so that the common commands can be run from the IDE by right-clicking.

**How to test**

In PyCharm, go to `build-tools/doit`, right-click on `frontend`, and click `Run`.

build-tools/doit/backend

@@ -0,0 +1,5 @@
+#!/bin/bash
+# Run the doit backend script immediately
+scriptdir=$(cd $(dirname $0) && pwd)
+cd $scriptdir/../..
+exec doit run backend

build-tools/doit/devdb

@@ -0,0 +1,5 @@
+#!/bin/bash
+# Run the doit devdb script immediately
+scriptdir=$(cd $(dirname $0) && pwd)
+cd $scriptdir/../..
+exec doit run devdb

build-tools/doit/frontend

@@ -0,0 +1,5 @@
+#!/bin/bash
+# Run the doit frontend script immediately
+scriptdir=$(cd $(dirname $0) && pwd)
+cd $scriptdir/../..
+exec doit run frontend

dodo.py

@@ -352,7 +352,7 @@ def task_devdb():
         actions=[
             'cp data-for-testing.json dev_database.json',
         ],
-        file_dep=['data-for-testing.json'],
+        # No dependencies, so that this script will always run when you invoke it
         targets=['dev_database.json'],
     )