feat: add company names with optional clickable links to experience section

- Add companyURL field to Experience model (optional)
- Update cv-content.html template to display company name with conditional link
- Add company-link CSS styling for clickable company names
- Add companyURL data for major companies (Olympic Broadcasting, AENA, SAP, Gigya, Everis, Indra)
- Companies without URLs display as plain text, maintaining flexibility

This addresses the issue where company names were missing from the experience section
and ensures links are included throughout the CV as per the original React version.

data/cv-en.json

@@ -19,6 +19,7 @@
     {
       "position": "Senior SAP Technical Consultant",
       "company": "Olympic Broadcasting Services",
+      "companyURL": "https://www.obs.tv/",
       "location": "Madrid, Spain",
       "startDate": "2021-01",
       "endDate": "present",
@@ -42,6 +43,7 @@
     {
       "position": "Senior Technical Consultant",
       "company": "AENA (via Accenture Spain)",
+      "companyURL": "https://www.aena.es/",
       "location": "Madrid, Spain",
       "startDate": "2021-10",
       "endDate": "2023-07",
@@ -73,6 +75,7 @@
     {
       "position": "Senior Technical Consultant",
       "company": "SAP",
+      "companyURL": "https://www.sap.com/",
       "location": "Barcelona, Spain",
       "startDate": "2019-10",
       "endDate": "2021-10",
@@ -98,6 +101,7 @@
     {
       "position": "Junior Technical Consultant",
       "company": "Gigya",
+      "companyURL": "https://www.gigya.com/",
       "location": "Barcelona, Spain",
       "startDate": "2017-10",
       "endDate": "2019-10",
@@ -169,6 +173,7 @@
     {
       "position": "FullStack Developer",
       "company": "Everis",
+      "companyURL": "https://www.everis.com/",
       "location": "Barcelona, Spain",
       "startDate": "2016-04",
       "endDate": "2016-11",
@@ -189,6 +194,7 @@
     {
       "position": "Fullstack Developer",
       "company": "Indra",
+      "companyURL": "https://www.indracompany.com/",
       "location": "Barcelona, Spain",
       "startDate": "2015-09",
       "endDate": "2016-02",

data/cv-es.json

@@ -19,6 +19,7 @@
     {
       "position": "Consultor Técnico Senior SAP",
       "company": "Olympic Broadcasting Services",
+      "companyURL": "https://www.obs.tv/",
       "location": "Madrid, España",
       "startDate": "2021-01",
       "endDate": "presente",
@@ -42,6 +43,7 @@
     {
       "position": "Consultor Técnico Senior",
       "company": "AENA (vía Accenture Spain)",
+      "companyURL": "https://www.aena.es/",
       "location": "Madrid, España",
       "startDate": "2021-10",
       "endDate": "2023-07",
@@ -73,6 +75,7 @@
     {
       "position": "Consultor Técnico Senior",
       "company": "SAP",
+      "companyURL": "https://www.sap.com/",
       "location": "Barcelona, España",
       "startDate": "2019-10",
       "endDate": "2021-10",
@@ -98,6 +101,7 @@
     {
       "position": "Consultor Técnico Junior",
       "company": "Gigya",
+      "companyURL": "https://www.gigya.com/",
       "location": "Barcelona, España",
       "startDate": "2017-10",
       "endDate": "2019-10",
@@ -169,6 +173,7 @@
     {
       "position": "Desarrollador FullStack",
       "company": "Everis",
+      "companyURL": "https://www.everis.com/",
       "location": "Barcelona, España",
       "startDate": "2016-04",
       "endDate": "2016-11",
@@ -189,6 +194,7 @@
     {
       "position": "Desarrollador Fullstack",
       "company": "Indra",
+      "companyURL": "https://www.indracompany.com/",
       "location": "Barcelona, España",
       "startDate": "2015-09",
       "endDate": "2016-02",