Feature Request: Wildcards for string values

Hi and thanks for this great extension. We use tags a lot for organizing our work items, and I would love to setup the swimlanes accordingly. Let's assume the following configuration:

```json
....
"swimlanes":{
"field":"System.Tags",
"defaultValue":"focus",
"values":[
{
"value":"focus",
"title":"Current Features"
},
{
"value":"refactoring",
"title":"Housekeeping tasks"
}
]
}
```
The swimlanes only work as planned, if the items only have the mentioned tags (e.g. "focus"), no other values are allowed.

It would be great to either support regular expressions (aka wildcards) or support of additional operators (with "=" as default)

**Wildcards example**

```json
{
"value":"*focus*",
"title":"Current Features"
},
```
Potential issue might conflicts, if both tags are present.

**Complex Operators**
Supported Operators in DevOps for String fields are _= , <> , > , < , >= , <= , =[Field], <>[Field], >[Field], <[Field], >=[Field], <=[Field], Contains, Does Not Contain, In, Not In, In Group, Not In Group, Was Ever_

```json
{
"value":"focus",
"operator": "in"
"title":"Current Features"
},
```