Added Job Count in the Dashboard (#858)

## Changes
Added one more sql for calculating the Total Job Count.

### Linked issues
close: #826 

Resolves #826 


### Functionality 

- [ ] added relevant user documentation
- [ ] added new CLI command
- [ ] modified existing command: `databricks labs ucx ...`
- [ ] added a new workflow
- [ ] modified existing workflow: `...`
- [ ] added a new table
- [ ] modified existing table: `...`

### Tests
<img width="1553" alt="Screenshot 2024-02-01 at 12 03 08 PM"
src="https://github.com/databrickslabs/ucx/assets/127273819/c7900423-354c-45e0-973f-b3539b5dd97c">




- [x] manually tested
- [ ] added unit tests
- [ ] added integration tests
- [ ] verified on staging environment (screenshot attached)

Author: prajin-29

src/databricks/labs/ucx/queries/assessment/main/00_6_count_jobs.sql

@@ -0,0 +1,3 @@
+-- viz type=counter, name=Total Job Count, counter_label=Total Jobs, value_column=count_total_jobs
+-- widget row=1, col=0, size_x=2, size_y=3
+SELECT count(*) AS count_total_jobs FROM $inventory.jobs WHERE job_name not like '[UCX]%'

src/databricks/labs/ucx/queries/assessment/main/01_0_object_readiness.sql

@@ -1,5 +1,5 @@
 -- viz type=table, name=Object Type Readiness, columns=object_type,readiness
--- widget title=Readiness, row=1, col=0, size_x=2, size_y=8
+-- widget title=Readiness, row=2, col=0, size_x=2, size_y=8
 WITH raw AS (
   SELECT object_type, object_id, IF(failures == '[]', 1, 0) AS ready FROM $inventory.objects
 )

src/databricks/labs/ucx/queries/assessment/main/01_2_assessment_summary.sql

@@ -1,5 +1,5 @@
 -- viz type=table, name=Assessment Summary, search_by=failure, columns=failure,count
--- widget title=Assessment Summary, row=1, col=2, size_x=4, size_y=8
+-- widget title=Assessment Summary, row=2, col=2, size_x=4, size_y=11
 WITH raw AS (
   SELECT EXPLODE(FROM_JSON(failures, 'array<string>')) AS failure FROM $inventory.objects WHERE failures <> '[]'
 )

src/databricks/labs/ucx/queries/assessment/main/02_0_database_summary.sql

@@ -1,5 +1,5 @@
 -- viz type=table, name=Database Summary, search_by=database, columns=database,upgrade,tables,views,dbfs_root,delta_tables,total_grants,granted_principals,database_grants,table_grants,service_principal_grants,user_grants,group_grants
--- widget title=Database Summary, col=0, row=2, size_x=6, size_y=8
+-- widget title=Database Summary, col=0, row=3, size_x=6, size_y=8
 WITH table_stats AS (
   SELECT
     `database`,

src/databricks/labs/ucx/queries/assessment/main/03_0_all_tables.sql

@@ -1,5 +1,5 @@
 -- viz type=table, name=Table Types, search_by=name, columns=name,type,format,storage,is_delta,location
--- widget title=Table Types, row=4, col=0, size_x=6, size_y=8
+-- widget title=Table Types, row=5, col=0, size_x=6, size_y=8
 SELECT CONCAT(tables.`database`, '.', tables.name) AS name,
        object_type AS type,
        table_format AS format,

src/databricks/labs/ucx/queries/assessment/main/04_0_external_locations.sql

@@ -1,4 +1,4 @@
 -- viz type=table, name=External Locations, columns=location
--- widget title=External Locations, row=3, col=0, size_x=3, size_y=8
+-- widget title=External Locations, row=4, col=0, size_x=3, size_y=8
 SELECT location
 FROM $inventory.external_locations

src/databricks/labs/ucx/queries/assessment/main/04_3_mount_points.sql

@@ -1,5 +1,5 @@
 -- viz type=table, name=Mount Points, columns=name,source
--- widget title=Mount Points, row=3, col=3, size_x=3, size_y=8
+-- widget title=Mount Points, row=4, col=3, size_x=3, size_y=8
 SELECT name,
        source
 FROM $inventory.mounts

src/databricks/labs/ucx/queries/assessment/main/05_0_clusters.sql

@@ -1,5 +1,5 @@
 -- viz type=table, name=Clusters, columns=failure,cluster_name,cluster_id,creator
--- widget title=Incompatible clusters, row=4, col=0, size_x=3, size_y=8
+-- widget title=Incompatible clusters, row=5, col=0, size_x=3, size_y=8
 SELECT EXPLODE(FROM_JSON(failures, 'array<string>')) AS failure,
     cluster_id,
     cluster_name,

src/databricks/labs/ucx/queries/assessment/main/05_0_jobs.sql

@@ -1,5 +1,5 @@
 -- viz type=table, name=Jobs, columns=failure,job_id,job_name,creator
--- widget title=Incompatible jobs, row=4, col=3, size_x=3, size_y=8
+-- widget title=Incompatible jobs, row=5, col=3, size_x=3, size_y=8
 SELECT
     EXPLODE(FROM_JSON(failures, 'array<string>')) AS failure,
     job_id,

src/databricks/labs/ucx/queries/assessment/main/06_0_pipelines.sql

@@ -1,5 +1,5 @@
 -- viz type=table, name=Pipelines, columns=failure,pipeline_name,creator_name
--- widget title=Incompatible Delta Live Tables, row=6, col=0, size_x=3, size_y=8
+-- widget title=Incompatible Delta Live Tables, row=7, col=0, size_x=3, size_y=8
 SELECT
     EXPLODE(FROM_JSON(failures, 'array<string>')) AS failure,
     pipeline_name,