UPDATE: split the webapp in a widget and the app itself

This splits the webapp in:

* IronCalc (the widget to be published on npmjs)
* The frontend for our "service"
* Adds "dummy code" for the backend using sqlite

Cargo.lock

@@ -389,7 +389,7 @@ dependencies = [
 
 [[package]]
 name = "ironcalc"
-version = "0.2.0"
+version = "0.3.0"
 dependencies = [
  "bitcode",
  "chrono",
@@ -405,7 +405,7 @@ dependencies = [
 
 [[package]]
 name = "ironcalc_base"
-version = "0.2.0"
+version = "0.3.0"
 dependencies = [
  "bitcode",
  "chrono",
@@ -679,7 +679,7 @@ dependencies = [
 
 [[package]]
 name = "pyroncalc"
-version = "0.1.2"
+version = "0.3.0"
 dependencies = [
  "ironcalc",
  "pyo3",
@@ -953,7 +953,7 @@ checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
 [[package]]
 name = "wasm"
-version = "0.1.3"
+version = "0.3.0"
 dependencies = [
  "ironcalc_base",
  "serde",